The guys from xatakandroid had just upload an excellent tutorial explaining how to control the use of data in Android Ice Cream Sandwich using the native data manager that comes in this latest version of the Google operating system. This way you can avoid unpleasant surprises on your bill or unexpected drops in speed.
The data manager in Android 4.0 is available via the menu Setting, go to the Wireless and Networking and then look for the Using data option. When entering it, you can see and control the amount of data used by each of the applications installed on your Android device. It is also possible to observe the use of data access, for which you have to activate the “Show using Wi-Fi” from the menu.
CONTROLLING THE USE OF DATA ON ANDROID ICE CREAM SANDWICH
1) After entering the data manager, you have to check the box that says “Set mobile data limit ” and enter the billing period of your operator.
It will show a warning before activating. Click on “OK” and now you will see a chart with two lines of red and orange.
2) When you move the orange bar on the graph you can set a warning when exceeded a certain amount of data. This will be displayed in the notification bar.
3) It is advisable to put a maximum consumption data for which you have to move the red bar set that amount.
4) Below the chart of data usage you can find a list of applications that consume data. By accessing the graph it will show you in orange the consumption of the apps, and a pie chart in which you can see the consumption data in the foreground and background.
To limit the consumption of an application, you can check the box Restrict reference data or background, which will make this stop eating when you’re not using it data, but keep in mind that you will lose the push notifications.