For Rooted Devices - Save data usage while locking your device.

For Rooted Devices

This small application will lock your device and turn off your data connection to save data usage. Data will be reactivated as soon as the screen lights up or your mobile device is unlocked. As soon as your mobile device light goes off or your device is locked, the data connection will be deactivated again. When your data connection is deactivated you automatically save on battery usage. This feature works on rooted devices only.

If you use this application on a device that is not rooted, it will lock the device without turning off data. This could save your hardware button from being used to many times to lock and unlock your device, prolonging it's life cycle.