Ann154 wrote:
Try turning off your data network at night. You can a widget to shut it off. Menu button > personalize > widget > settings > mobile network
Or go to settings > wireless & networks > mobile network > uncheck it.
If you really want to waste your time and have nothing change, do exactly as Ann154 suggested.
However, a simple search the AT&T forums will reveal that the nightly data amounts are merely aggrigates of the data used by the device since the last time it reported data. They in no way indicate the device is using data at that time.
