Original post by Anish,
Battery draining after water damage repair. ( Power IC and Battery )
I had water damaged my iphone 4s. The camera LED flast was always on and not turning of even when the phone was switched off. It was on for 2 days with the light dimming as time passed and then wend off. I could not open it as I did not have the tool kit. The phone turned on but used to automatically reboot after 3 to 5 minutes and used to never charge draining the battery. after purchacing the tool kit I opened it up and noticed that my battery connector had turned black and white. I cleant it and replaced my battery. After that my phone worked fine till 2 days. the second night when I kept it for charging it did not turn on the next day. It only turned on when plugged in for charging and would turn off when removed. I tried replacing the battery again but no use. I then took it to a apple unauthorised service centre and they said that my power Ic is spoilt and they replaced it with a intel ic for me.
This solved the problem
After that my phone is heating up when its used and battery draining very fast.
What can be the problem? Please help