Samsung Galaxy S: Will Wifi turn off 3G?

Posted on Jul 1 2010 - 4:42pm by Flux

*Update* Quickly Turn 3G/4G Data On and Off using Galaxy 3G/4G Settings (ON/OFF) App

Samsung has the ability to connect to your WiFi and enjoy your network with its 802.11 b/g/n modem.  Shocky of the samsunggalaxysforum forum asked:

How do I force this OS to use the wifi and not my 3g connection?
As it is I can’t see what it’s using to connect to the internet, it’s not telling me or giving any notifications!
How do I change this?

The answer is Yes!  When you use WiFi, you notice that the 3G icon in the notification bar disappears and the WiFi indicator took its place.  It should be as indicated.

To make sure this is true, we took a moment to preform what alovell83 suggested:

Test your speed.  Have wi-fi off, then have the wi-fi on.  You should see a speed difference, and that should confirm that you are using the wi-fi …

A dumb mobile phone download testing site ( was visited to download a 100k file.

Keeping WiFi off keeps our 3G on by default…

Turning on WiFi turns off 3G…

76 Comments so far. Feel free to join this conversation.

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  17. Brian October 17, 2011 at 9:48 am -


    The operating system always makes this notification as a warning.There won’t be any additional charges that you don’t already know about (i.e. overages).

  18. joyce October 16, 2011 at 5:51 pm -

    i have just got my samsung galaxy ace and i turn off my 3G which is the packet data. but when i want ti turn it on again there will be a attention note saying “connecting via packet data incur additional charges. continue?” i have the 3G plan but why does it have the note? does it really charge me extra money?

  19. Sosimc September 13, 2011 at 4:01 am -

    I am using Samsung Galaxy Ace. I have just received my phone bill for which I was charged for Data which I normally do not use except using wifi. Does it help if I perform this
    Wireless and Network–>Mobile network settings–>Use on 2G networks

  20. shah78ridzuan September 12, 2011 at 8:46 pm -

    Hi all.. I need help. I am using samsung galaxy s 1. My mobile AP is no longer working which is i dont know why.. It is working before.. But recently it doesnt.. Other device can connect my mobile by using the mobile AP but cannot surf to internet.. Anybody can help?

  21. T July 27, 2011 at 3:57 am -

    I had the same issue – wifi disabled and the icon not showing while trying to connect to my belkin wifi router. I assigned my phone a static IP in the same range as my router and it picked up the wifi without any problems.
    Also now I can see the wifi icon on the notification and could confidently use internet for as long as it is on wifi

  22. Bunny May 6, 2011 at 6:30 pm -

    Yes, for WiFi, you can just turn it on or off with the shortcut key or go to setting -> WiFi settings -> turn on/off.

    For 3G, as what Brian mentioned -> tick the “use packet data”. I’m not sure abt your service provider how they charge you on 3G service. For us in Malaysia, it’s too costly if without subscribing to a data package.

    So with 3G on, you might incur extra bill monthly whereas, WiFi is free.

    As I have mentioned before, Galaxy S will surf internet via 3G when WiFi signal is not stable. It will switch to 3G automatically when WiFi connection is weak. So be mindful that by turning on 3G all the time, it will incur extra data charges without your knowledge if you keep gmail sync on all the time etc.

  23. Brian May 6, 2011 at 10:47 am -

    Did you check menu->settings->wireless & network->mobile networks-> and check on ‘use packet data?’

  24. PuppyDogEye May 5, 2011 at 8:21 pm -

    Newbie here!!

    Well, I have similar problem… (maybe not directly the same but perhaps worth mentioned).

    I only got my new Samsung Galaxy S phone last weekend. At first night, I can see a 3G icon on the phone, when I turn the WIFI on, the 3G disappear (sounds right isn’t it)?

    Then for the rest of the weekm the 3G is nowhere can be found.

    Not big deal at the moment, but just in case if we are out of somewhere there is no wifi available, then my 3G does not work then I want to find out how – as I have read so many place, it should just one bottom click away to switch between 3G or WIFI… but not happen in my case…

    I would like to find out “where” and “how” can I switch between WIFI and/or 3G? Shouldn’t it be just one click away when you turn the WIFI off or the WIFI become unavailable??!!

    Any comments or suggestions?


  25. Bunny March 26, 2011 at 12:03 am -

    Hi, I just got my Galaxy S 2 weeks ago..and I have the same problem too as I didnt realise that my phone was using 3G to surf internet while I have turned on WiFi and I thought that I was browsing via WiFi..until 2 weeks later when I looked at my phone bill, I was charged over 300 dollars!!

    so guys, pls turned off your 3G -> Application-> Setting -> Wireless and network -> Mobile Network -> Deactive “Use Packet data” and “Data Roaming”. I suppose that will turn off 3G as I do not see the 3G sign on the screen now when I connect to WiFi.

    If you subscribe to 3G service, Galaxy S will surf internet via 3G when WiFi signal is not stable. It will switch to 3G automatically when WiFi connection is weak. Pls beware of this!! So the safe way is to turn 3G off OR call up your service provider to stop 3G as 3G is only for video calls, MMS and to surf internet.. correct? I suppose u do not need 3G to surf internet as WiFi is everywhere now.

    Pls also take note that internet connection will be interrupted or terminated if WiFi signal is not stable when you browse without 3G.

    Honestly, Galaxy S is much better than iPhone 4 🙂

  26. bruce March 21, 2011 at 5:32 am -

    howdy I have samsung galaxy S phone by ATT. data down load by 3g is SNEAKY !!!!! and I am being kind !! when phone screen goes blank ( goes to sleep ) ((even if you are using wifi )) phone automatically turns on 3g * UNLESS * you chose manually by changing setting on phone. Also if out of wifi area 3g goes on and will get emails from a year ago just to use data time lol lol !!! to cure this pain in the donkey,make a 3g connection (again manually) descibe by above call it no 3g leave all the other tecnical info as is are put 0 in each line.

  27. Melody March 5, 2011 at 12:03 am -

    You can stop your 3G!
    I tried it, with the help of this website:

    This is what you basically need to do:
    To disable and turn off data connection, do the following steps in Android mobile phone:

    Open dialer.
    Dial *#*#4636#*#* to open “Testing” screen.
    Tap on Phone Information.
    Press the Menu key or button.
    Tap on More.
    Tap on Disable data connection to disconnect and make inactive any data connection immediately.
    Tap on Disable data on boot to disable data connection on next boot up.

    Note: Both options can be selected concurrently.

    Method 2: APNDroid to Turn Off Data Connection

  28. hansoo March 2, 2011 at 1:47 am -

    @Hawking, E means you are under ‘Edge Network’ which is up to 1Mbit/s and typical bit-rates of 400kbit/s can be expected.

  29. Hawking March 1, 2011 at 10:46 am -

    Hello! I turned off my 3G, but the mobile can still connect to the internet. The difference is that with 3G mode, there is a 3G icon; the icon turn to be “E” in GSM mode. Who can tell me what is the “E”? Thank you!

  30. Ivan February 13, 2011 at 9:10 am -

    Hello! I also bought a Galaxie. There was a problem after flashing the phone with Android 2.1 to 2.2

    All installed applications can not surf the Internet on a network WIFI !! 🙁

    HOW TO SOLVE THIS PROBLEM?? – Samsung is silent! 🙁

  31. Jenny January 5, 2011 at 12:19 am -

    Thank you tamas_hun suggestion, how to switch off the 3G in Sumsung Galaxy S.

  32. stefan rowles December 21, 2010 at 7:10 am -

    i agree with ritzar in every way. how can you get something so full of tech if you dont even know how to use it. the SGS is not just a phone! besides yes all android phones have their own problems. you just have to know how to use it. i have one and it is great. no problems at all. people who dont know the way tech works are the ones who panic. oh well… most of the people here who complain probably complain about most things anyway. i have a Samsung pc, Samsung monitor, Samsung tv, Samsung fridge, samsung microwave,…. and a SGS…. and they all work perfectly, u know why? it’s cause i do research and learn how to use it before i start complaining about it. enjoy people. simple solution to these phone problems is just to do your research. if its too much work for you then get a land-line telephone.

  33. Ritzar December 17, 2010 at 12:27 am -

    Dear all,

    I started reading your posts referring the data over 3g problem.
    Some of you will excuse me for what I will have to say:
    If you purchase an expensive equippment, you better be sure that you’ll know how to use it at least at 100%! Some people buy smartphones because they are “fancy” or “top of the hit” and they have no Idea how to work with such an equippment.
    There are several solutions for the problem. No software and software.
    1. Non software.
    a)First option. When you purchase the SGS you make sure that the people who seel you the phone explain or disable the network data(non WiFi).
    b) Second option. I am not sure about the android 2.1 ( as I upgraded to froyo right after I unpacked the phone) but in 2.2 there is one simple solution: Press and hold the power button until a pop up appears with several options such as swich the phone off or put it in flight mode. Select “data Network Mode” and switch the option off. That’s it. no more science…
    c) Third option. Every network operator must have the option for you to dial a number (in my contry and my operator is *123#) where after dialling an information appears telling youj how much data, minutes and money you owe. Make sure to find out this number and check at lease once-a-day if you are not sure about what you are doing.
    d) Fourth option. Rename your APN.

    2) software

    a)the suggested appndroid works perfectly. install it and make sure to use it as a widget ( find a space in one of you home screens, than long press, add widget and select appndroid). it will create a button on your homescreen. when pressed it goes green or red i.e. data on/off.
    b)you can use a program called “3G watchdog” find it on the market, it’s free. I will not explain how it works, as the description and functioning of the program is very intuitive and self explaining. #G Watchdog can be combined to work with the “appndroid” inside the options. 3Gwatchdog is a software that monitors constantly your data usage and warns you if you get above certain quota that you gave as a reference. Download and see.

  34. tamas_hun December 8, 2010 at 11:53 am -

    Guyz, you are realy cool, for the reason I am not alone with this shiny shit!:D (btw i love my Samsung Galaxy S). Anyways after reading more of what more of you said I have done (or three) things to solve this problem, and succeeded, so thanks.
    All of these WITHOUT SOFTWEAR.
    1. and best is to rename the first APN (above). as Terry said.
    2. of course desable 3G. Settings > Wireless & networks > Mobile networks > Network mode > GSM only.
    3. Switch off sync, in settings>Account and Sync>Background data exchange (might be called else since I ve translated some of these.

    Annyways, APN rules! After Switching off 3G and renaming APN no application could have connected to the net even when forced.

    Note, some apps easily connetc without any notification even if you have done number 3.

    So make sure to do # 1 and 2.

    bye and cheers.
    ps. any additional apps might be fun and more comfortable to use back and forth, but this one is rock solid.
    Thanks again for everione, I just wanted to verify all the useful things you have said.

  35. George October 27, 2010 at 7:45 am -

    Hi, I actually did have it set to “Never” in the WIFI sleep policy, this was the default setting.

    I started out loving this phone, the honeymoon is over

  36. Chris October 27, 2010 at 7:00 am -

    You know what to do…. yea, we need to arrange a culling of the Samsung people responsible for this, I recommend we find the addresses of those responsible and have them shot burned stabbed and killed and there families raped in front of them before they die. This needs to be on you tube.

    Any one offering… I can supply silenced AK47s 🙂

  37. phil October 27, 2010 at 6:55 am -

    Totally agree Jason, its pathetic and peoples lives have become consumed by there dam phone, all because Samsung want to save a few bucks on testing and development. And why should the masses sit back and accept paying $600 for a phone whos main features are flawed and its very OS file system is totally BROKEN! By the way, the Froyo 2.2 does NOT fix the file system. SICK and EVIL, dam right!

  38. Jason October 27, 2010 at 6:47 am -

    I have a problem with these ‘community bodges’.

    1 they are not supported
    2 they void your phone warranty
    3 only recently has there be a ‘lag fix’ that lasts longer than 24 hours of use.
    4 there is no current fix that will bring the GPS performance in-line with virtually every other smart mobiles such as HTC desire et’el.

    Samsung call this a flagship product. All i see is people desperately scrabbling at the sides of the rather big hole they got themselves into when they spent an inordinate amount of £400 on what is essentially the most flawed smart phones out there. Samsung are SICK and EVIL, and your all suckers who should have waited, and done your homework.

    Samsung, last to market with 2.2 release, Christ, 3.0 will be released near the same time they get round to releasing 2.2.

    Fixes are EXCUSES, what a sick joke it is, that you have to apply fixes to serious major problems with the phone. You have to void your warranty, you have to often be an engineer just to understand how to apply said fixes due to the complexities. And if your thinking of the one click lag fix as a counter argument, the irony is very much lost on you.

    Samsung should fkn well release a phone that works, did you pay £400+ for a developer machine? or simply for a dam phone that fulfilled the promise of a flagship product.

    Samsung are a joke, just boycott them forever, they deserve to perish along wither there management and there managements families and children as an example to rest of the world! you know what to do.

  39. Jason October 27, 2010 at 6:46 am -

    I have a problem with these ‘community bodies’.

    1 they are not supported
    2 they void your phone warranty
    3 only recently has there be a ‘lag fix’ that lasts longer than 24 hours of use.
    4 there is no current fix that will bring the GPS performance in-line with virtually every other smart mobiles such as HTC desire et’el.

    Samsung call this a flagship product. All i see is people desperately scrabbling at the sides of the rather big hole they got themselves into when they spent an inordinate amount of £400 on what is essentially the most flawed smart phones out there. Samsung are SICK and EVIL, and your all suckers who should have waited, and done your homework.

    Samsung, last to market with 2.2 release, Christ, 3.0 will be released near the same time they get round to releasing 2.2.

    Fixes are EXCUSES, what a sick joke it is, that you have to apply fixes to serious major problems with the phone. You have to void your warranty, you have to often be an engineer just to understand how to apply said fixes due to the complexities. And if your thinking of the one click lag fix as a counter argument, the irony is very much lost on you.

    Samsung should fkn well release a phone that works, did you pay £400+ for a developer machine? or simply for a dam phone that fulfilled the promise of a flagship product.

    Samsung are a joke, just boycott them forever, they deserve to perish along wither there management and there managements families and children as an example to rest of the world! you know what to do.

  40. jin October 27, 2010 at 5:19 am -

    hey morten, what you said is true… but i guess give it time till froyo, android 2.2 is officially out. i think many of the phone’s issues can be solved… the lag is one big issue. if you can’t wait for froyo, then install something really simple like “one click lag fix”, it’s on the android market. it sort of fixes the lag the phone has…

    anyway, the hardware on the samsung is pretty hardcore. though definitely not with the best software out of the box… but if you’re willing to tinker and play around with the phone, you’ll def. get it to perform optimally.

    like what terry said i guess… if you want a phone really good out of the box, maybe you should have gotten a htc desire. but for the galaxy, once you play around with it, i think you’ll find that the phone isn’t all that bad!

  41. Morten October 27, 2010 at 4:36 am -

    I have been following this thread since I first posted and I notice that I am not alone in having problems with this.

    FIrst; Your phone will automaticly Turn OFF your wifi after a certain amount of time with your phone innactive (not downloading, but you are not fingering with the phone).

    This is what caused the 850 euro bill.
    You have to change the settings to “Never turn off wifi”. If you dont do that, you will have the same problem every time.
    You are also lucky that they removed the invoice 🙂

    I have had this phone for quite some time now and it is not living up to my expectations.
    The phone is really slow from time to time. Its horrible when I cant even open the phone cause it is lagging.

    Some actions that should be very easy to do, are in reality really really hard to do.

    And the most annoying part; the phone does not load my phonenumbers from my SIM card anymore. It did in the start, but now its just not possible to get my phone numbers out. Its really taking a piss when I have tons of friends listed on my SIM but when they call or send SMS i cannot know who it is.

    Also the Samsung Apps are usually really shitty, except the only game I can try, wich is really good.

    Also just download the antivirus app as soon as you can. Its a lifesaver.

  42. George October 27, 2010 at 2:20 am -

    Thanks Jin. The charges are those ridiculous “extra” charges applied for going beyond your agreed limit – 2c per KB. I went 1GB beyond my 1GB limit. If I were to buy a package that had an extra 10GB per month, with the same carrier, it would cost me an extra €10! so the €850 is completely unrealistic and doesn’t represent any real loss to them. It is telling how quickly they waived it.

    I have downloaded a nw monitoring tool that monitors both HSDPA/3G and WIFI. The wifi signal is usually fine, never had a problem with any other device (PC, PS3, Laptop). If I leanr anyhing useful I’ll post it.

  43. terry October 26, 2010 at 10:13 am -

    The Galaxy S still has not had its Android 2.2 yet, add to all the issues explained in the first post and we see this phone is seriously flawed from a technical point of view;
    GPS, file system. And an ownership point of view; Samsung.

    Get a HTC desire HD…

    While your at it, forget contracts, go for sim-only pay-monthly deal from Tesco. They are doing a promotion at the moment for £10 you get 500 mins, 3000 texts and 1GB data a month. 🙂 enjoy.

  44. jin October 26, 2010 at 10:04 am -

    hi george, 850 euros is amazingly crazy! haha, i didn’t know data usage cost that much ireland.

    in theory, 3g will automatically switch off once wifi is discovered. i think your safest bet would be to download ONLY when you see the wifi signal. as long as the 3g/hsdpa signal comes up, make sure you check your wifi settings immediately.

    i guess the best bet would be to download “apndroid” and “3g watchdog” or applications similar to these. “apndroid” basically switches off your 3g connection, and prevents any data usage. “3g watchdog” is an app that identifies how much data your using. you can get apps similar to these… but i think these 2 apps are the best i’ve used so far.

    i use “apndroid” at home, and switch 3g off whenever there’s wifi available. i’m really afraid that somehow, it’ll start using 3g instead of wifi. i doubt my service provider will ever waiver such a request like yours! haha.

    i guess with regards to your problem, perhaps your wifi connection isn’t strong or drops frequently, that’s why 3g comes into play and therefore all the data charges. i think the problem here is with your wireless at home… maybe you should get it checked!

    using the apps i mentioned won’t solve the problem, but i guess it can prevent you from getting a shock when the bill comes and it can limit connection whenever you want it to. you can do all this manually, but i think the apps are really useful.

    hope this helps! 🙂

  45. George October 26, 2010 at 9:10 am -

    I bought a Galaxy S last month. A couple of days ago I received a bill for €850 when it is usually €40!. I am with Vodafone Ireland. The extra charges are all data, my typical data usage over 3G/HSDPA is 1-10MB per month, last month it was 2GB. When I contacted them (about half a second after I received the bill) Vodafone agreed to waive the charge.
    The usage pattern for last month varied day by day, some days just a few hundred KB while for others it was 100MB +. All data usage was posted after midnight although I am not sure how relevant this is.
    I have been using the phone to download large files over my home wifi.
    From reading the posts above my guess is that the wifi was being dropped and the remaining data was downloaded over the 3g/HSDPA network. Does anyone know if this is possible?
    I have switched off mobile data for the moment and am closely monitoring my network usage both online (via Vodafone site) and from the phone with a view to trying out a few simple tests.

  46. jin October 19, 2010 at 3:31 am -

    hey p.schmitz,

    i’m sorry but i think the original message was meant for corey! haha.

    anyway, i looked further into your issue (not being able to switch 3g off) and found the ideal solution. download “apndroid” from the android market. it basically allows you to switch your 3g on/off. a really simple and easy to use app. if you don’t need your 3g. “3g watchdog” would be the ideal device to use in conjunction. “3g watchdog” has an automatic checkbox to switch your 3g off once it hits a certain quota.

    the solution i suggested worked for me, but i’m not sure whether it worked for any one else. i’m using the i9000 in Australia, it was originally an Optus phone, but i’m using a 3 Mobile sim card, andriod 2.1 rooted, but i doubt being rooted or not makes a difference.

    btw, all these issues are really interesting and i’d suggest going to “xda developers” and join the forum there. there’re heaps of stuff on all variants of the galaxy s.

    sorry for the late reply, this site doesn’t support making comments from phones! my iphone and i9000 at least. and i tried opera mini, dolphin, xscope and skyfire for the i9000! none of these could work sadly.

  47. P.Schmitz October 18, 2010 at 1:47 pm -

    Dear Jin,

    This is a good point. Thanks for the comment and the advice. Unfortunately I don’t think this works on all devices. I tried to do what you detailed above on a ATT Captivate, without any luck. It wouldn’t recognize the second AP and switching to it never resulted in me being unable to connect to 3G. It would just revert back. Does this work for anybody else and if so can you list your model, carrier, and android OS version? Thanks.

  48. jin October 18, 2010 at 6:18 am -

    hey P.Schmitz, you need to get change the APN settings for your provider. as mentioned up top, got to settings, wireless and network, mobile networks, Access Point Names, click menu, and add New APN. either google these settings or ask your service provider… but i think google would be the easiest and fastest! with regards to switching it off, i think your best bet would be setting up an alternative APN and name it something like “NO 3G”. you’ll find out whether it works just by going to google or any website. the phone will just say you’re not connected to the net.

    with regards to all these issues, i recommend d/ling a 3g watcher or tracker. i’m using “3g watchdog” now and it tells you your data usage, to what level of accuracy, i’m not too sure though. at least you’ve got something to warn you before you get a shock when the bill comes!

    hope this helps!

  49. corey October 17, 2010 at 1:45 pm -

    i just got the samsung galaxy s i9000 yesterday and ive got free internet but it seems to not want to connect to 3g, only wifi does anyone know how to turn 3g on so i can use internet via vodafone instead of wifi hotspot if possible could someone answer asap please i really like it its just that one problem ??

  50. P.Schmitz October 5, 2010 at 11:32 am -

    Dear Jameshid,

    Is there anyway you can rephrase your question? I’m having trouble understanding what you’re asking about, thanks.

  51. P.Schmitz October 5, 2010 at 10:25 am -

    Dear Anthony,

    This is normal on an Android device. What shouldn’t happen is an App using your data connection unless you’ve given it permission. Most apps have a sync function that you can turn to automatic and set how frequently they ping their servers. Also be aware that apps like Advanced Task Killer don’t actually do much in terms of freeing up memory and in the end can actually slow your phone down more than help.

  52. Anthony October 4, 2010 at 10:02 pm -

    I find that apps just seem to start in the background sometimes on the Galaxy S – even with the screen off. If I turn the phone on and check Task Manager, there could be seven or eight apps fired up. Any ideas on what would cause this? They range form games to system apps to the reader and the music and video players.

  53. jameshid October 3, 2010 at 4:46 pm -

    well im planned to buy this phone but idc about the sim cart so is it possible when u replace the sim cart with antother 1 who is without an abo will this still happen ?

  54. Redi September 27, 2010 at 3:35 am -

    If Your Phone Often Struggles to Find a 3G Connection, Disable 3G
    Keep searching on 3G connection will drain your battery. You can do this from Settings > Wireless & networks > Mobile networks > Network mode > GSM only.

  55. Paulo Borba September 22, 2010 at 4:41 am -

    If you are tired of reboot your galaxy s after 3g unexpectedly stop working. This is for you.
    The galaxy S is a smartphone designed to be everytime online. And this is why we don’t have the option to turn off 3g in android.
    Then, we have to download apps from market to do this work for us.
    I use the app “quick settings” to control everything. But I was experiencing some problems with 3g. Especially when I use and turn off the wifi . After that the 3g only turned on with a reboot.
    Install the app “quick settings” and configure to show this buttons on top:
    – Mobile data
    – wifi
    – Mobile data (apn)
    Just reboot your phone and use the “mobile data” and the “wifi” to toggle between 3g and wifi. Keep always on the “mobile data (apn) button.
    If you use “mobile data (apn)” to lock the 3g remember to always turn on the “mobile data (apn)” before turn on the “wifi”.
    If your 3g does not work turn on “mobile data (apn)” and the turn on “wifi”, wait the connection and then turn off “wifi”. The 3g will work again.

  56. Anders September 15, 2010 at 7:24 am -

    Hi Guys, excuse my English. I just finished a chat with Samsungs mobile support, My problem was that my Samsung Galaxy S stole my money using internet when I didn’t use it. Tech support told me to download a program called “APNdroid” from the Android Market, it should be easy to turn off 3G, EDGE and GPRS. So far it seems to work for me, tried to turn off Wi-Fi while using the “APNdroid” program and wollah no internet!

    Hope this will help

  57. Jason September 15, 2010 at 2:19 am -

    Im not sure on this idea that the phone uses huge amounts of data, that’s a new one. Obviously Android and its native apps will synchronise things like email, weather and whatever other applications you have installed that use the internet to download or synchronise.
    However, the non-network locked Samsung phone used only perhaps 1MB a day at most.
    The only time this is exceeded to any great amount would be due to a user explicitly downloading, such as when surfing the web, using the app market or using internet heavy applications like google maps or streaming music, all of which require the user to actively imitate use of such applications. These aren’t background activities that are hidden. So as I say this is surprising and I can only think it is due to dreaded carrier specific software, as I can report this is not happing on the non-network Samsung only version of the phone.

    In which case the network should be held accountable and sued, get a class acting together!

  58. tumpa September 14, 2010 at 8:26 pm -

    I’m having the same problem too. Had my phone for 3 weeks a i just got a bill for $600 from bell canada for data i have not used. Phone cost me 480 including taxes. Thats over a thousand dollars. Thats 2 car payment, thanks samsung. This will be the last samsung product i will be purchasing.

  59. Jason September 13, 2010 at 2:08 am -

    Galaxy has so many issues. Review here:

    I’m an software engineer myself, so I say this with some authority on such matters. Having used the Galaxy S for a month now, what is more than apparent when compared to HTC Desire et’el, is that it’s networking subsystem is simply faulty. Both WiFi and to a lesser extent GPRS will stall and a phone restart is required to enable connectivity to the internet again.
    There is also the renowned ‘lag’ issue, which is simply down to Samsung’s flawed implementation of a file system, the EXT2 file system. Going against the grain of other established players, Samsung chose to reinvent a file system for android and SSD storage that has extremely poor performance. The galaxy has segmented its memory on the phone in two, an inbuilt SD card of 5.78GB and a separate SDRAM component of 1.71GB capacity. The later of which is too slow and has not been matched to the processor throughput. these issues combined mean that the phone processor which is the great hummingbird, sits about waiting idly for the dreadful IO subsystem to retrieve data. The community have created a half way house improvement (not fix) that helps the phone recover from Samsung’s pathetic foibles by way of a patch that you have to apply. However how sad it is that you have to root your phone to do this, how sad it is that cruddy workarounds are having to be applied to what should work correctly in the first place. I did not spend £400 for a buggy development build ! did you!!!
    Then the GPS issues, the receiver is either the cheapest pile of rubbish ever put in a phone, or yet again rubbish software is to blame. Perhaps the latter is true as Samsung have committed to ‘fixing’ the GPS issues by way of a software patch. But looking into that and its appears more like a half ass’d workaround, they are in actuality just augmenting the receiver with the equally inaccurate magna and giro sensors, i would prepare for little improvement in GPS. Currently, with a dull sky, that cloud means that Google maps put your position some 30 to 120 meters away from you and thus the tracking jumps all over the place, from side road to side road. Not so bad on a sunny day where the satellite signal would be at its best. . . Common, Jesus wept Samsung what are you playing at!
    This is indicative of a company who allows stupid and plentiful English grammar and spelling errors to litter the UI. Just how backward can quality control and capabilities get? This could not be more evident than in the god awful Client PC software known as ” Samsung Kies “. With blogs of complaints and even community patches sprawling the net for the other issues, we have up-raw on the client software front, where it simply does not even detect the dam phone for the majority of users, hampered by a stream of errors and what appears to be linked to elementary compatibility issues with the Samsung drivers.
    All in all, Samsung must fire all the dead wood decision makers out of there software organisation and employ new minds and new modern capabilities if they are to succeed. for now i say boycott them! There evil and need to be taught a terrible lesson in how the masses can vote with there feet. Send your phones back under your selling regulations and go HTC, or whoever creates phones that are not flawed jokes. All phones have a few bugs, sure, but Samsung have broken new ground with this monstrosity. And so it goes, i’ll be sending mine back. Hello HTC
    I should point out, my ramblings here are related to the sim free version, thats the non-network locked or associated.
    I would never purchase a phone like this from a carrier. for me its actually cheaper to by this off contract sim-free from Best Buy and get a SIM only deal with unlimited calls and texts and internet from Gifgaff or Tesco.

    Samsung have already put a a bunch of bloat wares on this phone as it is. Carrier restrictions and “additions” only server to make the phone an order of magnitude worse in most cases. As proven in this review, the carrier loaded phone suffers worse lag than ‘other’ variants.

    I would think (hope) that they are fixable, but with a flawed file system, i can only imagine that’s not something that is easy to fix, I have heard nothing on any such improvement regarding the lag, which is STILL reported within leaked test candidates for Samsung’s September Froyo 2.2 release.
    Only time will tell, but history tells us Samsung are one of the WORSE for not bothering to release software updates. I would say the odds are stacked against you all. Get a HTC if i was you.
    They say the Hummingbird has all this reserve power lol but what good is that when your day to day tasks and use of the phone is hampered so badly that even basic menu animations stutter, the app market freezes, apps take a age to load up, with general lag everywhere. non of which happens on the desire. I ask you, which phone is faster and as a daily user of both i would say without a doubt the desire is ten times faster. How sad and how ironic. Samsung – great hardware division, dreadful software division. That’s a management problem that need solving fast.

  60. Gary Taylor September 11, 2010 at 5:59 am -

    Ok i installed APN OnOff ver2 from the android market as suggested in previous thread.
    Can report complete success, the galaxy is no longer sucking my credit dry.
    Doesn’t make any impact on Emails, texts, voice calls and wireless.
    So i’m now completely happy with phone, it really is one of the best phones out there at the moment. Still don’t think it is as good as the iphone 4 my son has but then i saved at least half of the price of his phone.

  61. Gary Taylor September 10, 2010 at 8:09 am -

    I purchased galaxy s a week ago and as the threads suggest i have the same problem, only found out by accident.I’m not a big user on the phone side but purchased phone for its other features, a big shock when i realised it had sucked over £5 from my pay as you go account in less than a week.
    I have turned off everthing that could possibly access the net but it still uses a £1 a day, data roaming? I intially thought this was a problem with Google sync but as i say everthing is turned off!.
    This will ruin a good phone, i won’t keep it if this isn’t fixed, however the word will soon get out and then we won’t be able to get rid off the phone.
    I am trying the APN on/off app as suggested, i will monitor my credit and let you know if it stops the credit from being eaten away.

  62. Trond September 8, 2010 at 2:25 pm -

    Have galaxy S with android 2.1, and had same problem as everyone. Found an app called APN on/off and this really works. Tried browsers, and marked, after turning off APN and 3G symbol disappears and I’m offline. Then turn on Wifi and turn off wifi after surfing, APN still off. Then turn on APN and 3G works. This looks promising. Hope it helps some of you.

  63. Jq September 8, 2010 at 5:50 am -

    Im having the same problem as you guys. I incurred 30MB of data charges. Hope i can waive off the bills by my telco. Best is you ask your telco to disable your 3G data roaming so that this stupid 3G doesnt automatically connects. This is a total silly thing that this samsung galaxy s didnt fix it.

  64. che August 19, 2010 at 2:17 pm -

    I managed to change a setting so that if wireless was turned on the 3G turned off. Downside it now doesn’t automatically show when new wifi is detected.

    Problem is try as I might I can find the setting again!

  65. Tony August 17, 2010 at 9:18 pm -

    My new galaxy S stole $80 worth prepaid in less than a hour. Samsung must fix this problem. I have wi-fi connection almost everywhere but still it goes off after a while and 3G starts.

  66. Chandni August 17, 2010 at 5:13 pm -


    Thank you for the instructions.. Just wondering if I change the APN name, I can still use Wifi to access data?

  67. Terry August 11, 2010 at 7:04 am -

    A little confuzzled as im under the impression you CAN disable GPRS in android, its not specific to the phone but a generic ability in the android OS.

    Technically its a ‘work around’ as Android 2.2 (Froyo)has a new explicit function to do this ( which apparently does not have programmatic interface D: ), but in Android v2.1 (Eclair) , you can achieve the same thing by renaming what is referred to as the APN name. I mentioned this above, accessible via the settings menu. That’s ‘settings’/’wireless and network’/’mobile networks’/’access point names’. Once in this menu you select the entry that for your network that has a ‘APN type’ (scroll to bottom field) of ‘internet’ or ‘internet + mms'(Sim free phone, not sure about evil network phones) once you have the correct entry opened up scroll back up to the ‘APN’ field, click that field and simply change its name, I would merely place a single character at the end to invalidate it i.e. ‘’ becomes ‘prepay.tesco-mobile.com1’. What this does is invalidate the url so the phone can not connect to the network GPRS system for its internet comms. MMS will be unaffected as this has separate fields. To re enable GPRS simply rename the ‘APN’ field back.

    Long winded and probably not ideal as the phone will still keep trying to authenticate and log onto the GPRS system, albeit, it never will succeed as the APN url will always be wrong so it can never successfully connect.

    You can get apps that basically rename the Access Point Name for you at the click of a button, such as “Extended Controls” from the app market.

    Problem I see with this, however, is that its non-intended behaviour and this part of android was never expected to be used in this way for this purpose. The process works as intended but has a nasty side affect. ( this is now an assumption based on observed behaviour)

    Being a programmer myself, what i think happens next is that android keeps trying the APN to log onto your mobile networks GPRS system to open a connection for your internet comms, as it keeps failing, it reduces its retry attempts or more likley, exceeds a predetermined max number of retry attempts. So if for example an hour or more passes, Android may have given up trying. When you rename the APN back, it appears to not notice, as it looks like the underlying system has given up trying to connect, so subsequent renames to the APN name are not detected and the phone never reconnects to the GPRS system. The only way on the Samsung firmware that I have seen to kick off the connection retry, is to restart the phone !! this is poor programming in my opinion. The act of renaming the APN should invoke the retry system again due to its nature. I don’t know who’s fault this is, Samsung or Google’s? is this the same for HTC desire I ask, is it phone spesific?

    Anyway this is separate issue to the disconnecting WiFi issue.

  68. K Villis August 11, 2010 at 6:16 am -

    Had the same problem with 3G signal, charged a fortune for 3mb usage with out even connecting to internet, I also noticed when ever I restarted the phone the 3G indicator was doing something. I called my operator and had 3GPRS turned off, it also diabled picture messaging function but don’t care about that. Now it only uses wifi.
    Hope they fix the problem soon as it is the most stupid thing to miss out, turn off 3G they did easily enought with bluetooth and wifi

  69. jmgmad August 9, 2010 at 9:03 am -


    I´m with that doubt… at this moment is already exist some applications to disable 3g? Because this steal all my money as Terry described! I´m with the same problem!

    Best regards,

  70. Terry August 9, 2010 at 3:10 am -

    One other thing about the WiFI problem, appears to be certain Access points not all. For example, BT Home Hub 2.0

  71. Terry August 9, 2010 at 3:09 am -

    Not sure the turning off of 3G is the problem. You can do this via the settings menu/wireless and network/mobile networks/use only 2G networks. (Sim free phone, not sure about evil network phones) Also to disable GPRS completely you can get apps that basically rename the Access Point Name, such as “Extended Controls” from the app market. Or do it manually, same thing. Which brings me on to another ‘issue’ with Samsung firmware… when you do this renaming manually or via an app, then rename back so GPRS is enabled again, the GPRS icon reappears all well and good, but no data is transmitted or received and all apps report no internet connection. You have to restart the dam handset for it to work again some times. No such issues with HTC Desire. Basically both the WiFi and GPRS comms on thsi phone have deep underlying issues, similar in the fact that the UI says one things yet the comms do another and become unavailable to the OS. My guess is that the same asshole programmer(s) and or tester(s) were involved with both drivers. Samsung you BETTER have this fixed in September come your later than everyone else release of Android 2.2 is supposedly released.

  72. Eric August 8, 2010 at 10:34 am -

    The 3G on the I9000 can not be turned off.

  73. Anders Jakobsen August 7, 2010 at 9:55 am -

    I have the same problem as Terry and Morten. Using a brand neew Samsung Galaxy S i9000.
    is there a way to turn 3g off? I only want to use wi-fi when connected to the internet.
    Can abyone help? Plz, really need to get this fixed soon.
    Lets hope the 2.2 update can help us…

  74. Elen August 7, 2010 at 5:25 am -

    I also facing the same problem!! I already spent a lot of money because of this fucking problem!! Please fix your problem ASAP!!!! If not, I m going to return the phone as well!!

  75. Morten Hjertholm July 24, 2010 at 7:42 am -


    This is a huge problem for me. I NEVER use my phone outside where I have wifi.

    However today I got a SMS from my provider telling me I have downloaded over 150 MB this month NOT from WIFI. HOW???

    I am going back to the shop where I bought my phone and complain. I cannot have a phone that will steal all my money on stupid data roaming (when it is turned off) and the other major issue, when it turns off the wifi.

    I have tested abit of this;

    If you have WIFI on, turn the screen off for 5-10 min and then log back into the phone.

    You can see that the first thing is the 3G sign (that I dont even have turned on) comes up, then you can see traffic both ways for a short while, then it connects back to wifi.

    So somehow the phone decides that when it gets reactivated, it does not decide to log into wifi and then do its dumbass roaming that I dont want either way, it does it the other way. The more expensive way. The more annoying way. The stupider way.

    I am demanding money back from my sale. I cannot go out and buy the most expensive phone on the market and then have it steal all my money on transfers I have never seen anything from.

    This is a huge issue, much worse then the Iphone 4, as this actually makes me lose money.

    This is a huge fail in my new phone. I hope Samsung can fix this fast, if not I might have to return the entire phone.

  76. terry July 18, 2010 at 5:36 am -

    All there is a problem with the GT-i9000 WiFi.

    It will disconnect itself after a duration of anything from 10mins to 30 mins.

    Its noticed when your surfing web pages, as they will suddenly stop being available and the “web page not available” message will appear. Or perhaps your streaming internet radio or using the Media server, any WiFi based comms will simply stop working as the phone turns off the WiFi chip but does not update the phone software it has done so.

    this issue is wide spread – reported on lots of forums.

    looks like it affects all Samsung gt-i9000 units.

    It appears to be a driver issue with the Samsung base OS drivers in the phone. The sleep policy is not operating correctly and the wifi radio is being disabled by the hardware and is not being controlled correctly by the software. Also the wifi signal is not being correctly reported=. the signal appears to be attenuated more than it really is.

    This must be reported now as top priority.

    Also if this hits the press, Samsung will experience a huge PR issue on the same scale as the Iphone 4 aerial joke issue, so Samsung rep who is monitoring these threads get yourself a pay rise and bring this to the attention of the Samsung development manager ASAP.

    Please Samsung fix your WiFi drivers ASAP !!!

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