I just bought my galaxy mini 2 days ago and i noticed that the battery drains so fast or so i thought. I charged the battery and got it at 100%, but after just 7 hours its already at 70% just on stand-by mode. I even lowered the brightness to 0 and turned off my GPS. But I think it still drains faster than a normal battery for a brand new fone. Is this a normal issue with galaxy or any android fones?