i have a galaxy s3. Sprint phone, but flashed to ntelos like a year ago. my battery was charging extremely slow and discharging even when on the charger. i borrowed a friends old battery and my phone started charging a little better but still horrible. anytime i put it on the charger, it stops charging multiple times. and it hasnt charged past 82% in four days. there are no other problems wit the phone. this started a couple days after i updated it (like 2 weeks ago). my old battery had water damage (if thats relevant. but it got water damaged over a year ago). and all chargers fit loosely in the charger port. what is wrong with my phone.?? or how can i find out what is wrong with it.??