Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
Thats strange, now that the battery is sub 10% it takes forever to go down. Does this mean it's being recalibrated?
 
Did you by chance restored from backup from your previous phone when you first got the iP4?
 
Thats strange, now that the battery is sub 10% it takes forever to go down. Does this mean it's being recalibrated?

Quite possibly. When you do calibrate, make sure you leave it on the charger for a while past full charge too. Let it find it's max, even if it seems to think it's there already.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.