Hi mattcarr
welcome to the eForum.
The Charging light does go off during use, that is normal. It will still be charging though!
During use the incoming charge may not match the process being used. Such as SatNav on the Phone can use the same amount of power as being put into the phone, as an example.
Make sure the cable going into the mains charger is securely pushed in as well as at the phone end!
Perhaps you need a replacement charger? You will need one that outputs 1000mA (1.0A).
I would recommend an official Samsung charger to be on the safe side.
I don't charge mine through the night so can't be sure...?
With the SGS1 when the phone reached 100% charge, charging would stop, and the phone would continue to use power as if it were unplugged. Only when the cable was removed and replaced would charging begin again.
I put my phone into aeroplane mode through the night and it loses 1%. I don't need to be able to recieve calls through the night though! The Alarm still works however.
I do charge mine all night and when I come downstairs in the morning the battery is at 100% so the phone must continue to charge even when the battery is full.
Sometimes, but not always, there is a notification advising me that the battery is fully charged and that the charger should be disconnected.
