One really nifty feature of the Android 4.0 Ice Cream Sandwich update for the Galaxy S II is the integrated data monitoring feature. Rather than having to download a separate widget or application to monitor your data use, you can use the built in settings to track data usage as well as set alerts for overuse.
To access your data monitoring settings, hit Menu > System Settings:
From here you can see (turn on your data if it isn’t already on) a graph of your mobile data usage over time. Tick the “Set mobile data limit” so that you can toggle the data warning and limit sliders. Simply drag the tabs to change at what point you would like to 1) receive a usage warning and 2) activate a cap on data usage. In this view you can also view your total usage within a set period of time by sliding the two tabs at the bottom of the chart–the readout is also at the bottom: I used about 64.57MB from March 21st to April 11th.
If you scroll down more, you can see individual app’s data usage, ordered from highest to lowest. If you click an application, it will show you a similar data usage chart but tailored to each app. You can prevent applications from using background data by ticking the box at the bottom of the menu. This will allow users with 200MB plans to carefully monitor their data usage and easily stay below their caps.
Hope this helped! For more tips, check out our Tips Archives in the sidebar to your right!