recently my battery life has been terrible so i've decided to restore as new via iTunes. That helped and now it looks much better (1 day standby & 5-6 hrs usage) which is good i think given the fact that i'm using twitter a lot with banners etc.
But.. I've noticed strange behavior. Right now i'm charging my phone, it was at 14% and suddenly while charging the battery percentage dropped to 10% and of course the warning message show up. Is it normal to see something like this while charging? At the time i was using "kitcam" app and app store.
Sometimes when i'm at 20% for example (not charging) i see the battery percentage drop to 10% in just a few seconds. That happened even before the restore.
So. Should i be worried about this? I'm open for any suggestions.
iPhone 4s, iOS 6.1.3
Sent from my iPhone