Changed logic board on my iPhone 6, 16gb from an iPhone 6, 64gb.
I changed logic board on my iPhone 6, 16gb from a iPhone 6, 64gb but now I have issues with the battery draining. I have tried different things in the phone to turn off different things on settings and I have also tried switching to a different battery that I know for sure is a good battery. Does anybody know what the problem is?