My iPhone 6 battery percentage seemed to have some issue, it turn off by itself before reaching 0%, sometime at 30+% turn off already. Plugging into charger turn on with 19% most of the time, then in 1 min become 26% and then charge normally up to 100%.

I tried restoring the phone to default iOS without beta but doesn't seemed to have helped. However I did a battery capacity check with some software and found that the battery capacity is now at 1700 from 1751 original capacity. (Which I think is extremely healthy, but calibration issue, problem begin after one of the beta update for 9.3)

Is there any solution to fix this? Or do I have to replace the battery with a new one?

My iPhone warranty has expired on February, roughly how much if I were to replace it in original Apple service center in Mid Valley? I quoted from outside shop for around 150~250.

This post has been edited by LovelyPotato: Apr 8 2016, 09:34 AM

Wow more than double price lol. I guess I'll have to replace it 3rd party then. Thanks for the info!

In case anyone having same problem, I fixed the problem by draining the phone (auto shut down at 30+%) and not turning it on for few hours. After that can turn on but percentage showing at 30 something and auto shut down again, only plugged into charger and somehow it seemed to have fixed my battery percentage problem, weird but worked