Battery problem on iphone 4
The problem with my iPhone 4 happened some weeks ago, I think after I upgrated to 4.3.5
The phone automatically turns off when the battery states 20% remaining, and requires me to plug the charger on. When I plug the charger on, it turn on again and the battery still states 20%. Sometimes it automatically turns off at 40% of battery...
I restored 2 times but the problem havent been solved. I just hope this is not a hardware problem... Just bought the phone in April in Singaprore but I dont stay there anymore.
If you have the same problem and solved it well, please let me know how can I do to save my phone.
Thank you!
iPhone 4