Phone restarting when reaches 70%
Hi, at start sorry for my bad English. I have problem with my phone. I replaced my battery 2 months ago, and everything was fine until now. About a week ago i noticed my phone keeps restarting when battery level reaches ~70%, I'm don't get red battery screen, just apple logo - sometimes it turn on shows about 65% battery and restart again in few seconds, sometimes its just black screen and restart again. It stops when I plug in charger and charge my phone. Anyone help?
Update (03/15/2017)
I replaced next new battery in iPhone service - that won't change anything - Any other ideas?
No I never got it wet.
App that shows battery life shows it has 10% condition and 0V voltage. ;(