Chosen Solution
Hi, My iPhone 5 has a serious problem, When the phone is powered on the battery give me about 5 hours only, but the problem is when I turn Off the phone, The battery keep discharging until it can’t power on the device again, I tried every solution, Restore new firmware, Change the battery, The charger …. but nothing….
This is a common problem with the iPhone 5 it’s most likely the power ic U2 chip .. It’s can be caused by using 3rd party chargers
My iphone 5 drained very fast once I installed a new app, even though I removed the app, the battery still drained fast. I had to charge twice a day. Then I searched on reddit, they suggest me to calibrate the battery, now my phone work normal again.
