Chosen Solution
I have an iPhone 6 since December 2014, and a month ago it started to run out of battery very fast (it lasted 20 mins in a Viber call, 40 mins outside in my pocket) so I decided to replace the battery. When I first got my phone back it worked fine for a day but after that it started to turn off automatically, even if it was charged 100%. Every time when I plugged it to the charger it turned on immediately but had 30% left. If I plugged it off, the phone turned off after ~30 seconds, and continued doing this for 3-4 hours. Then it started to work fine. I decided to replace the battery again, but I still have the problem. I don’t have looping Apple logo. When it turns off (not charging) I can’t turn it back on, it doesn’t even show me that screen when it’s out of battery, it shows nothing. Please help, -Med
Did you do a hard reset after replacing the battery? That could be a problem if you didn’t. If you bought your part from iFixit, there should be a little card that tells you how to calibrate the battery and that you should do a hard reset after replacing the battery. To do a hard reset hold down the sleep/wake button until you are able to power down, but don’t. Then while holding the power button, press the home button until your screen goes off. It should then turn back on. Hope this helps Alec T.
Make sure you’re getting your batteries from a repair shop that actually do volt tests on their batteries before installation. Over voltage batteries can cause damage to your motherboard by putting more into the board than needed. Off the top of my head, I believe the iPhone 6 voltage is 3.8 volts (please correct me if I’m wrong). And again, go to a reputable shop/person for the parts. There are cases of a bad stock, since they are all aftermarket. Let me know if this helped. Jason DeviceSavers - Tampa
