Why motherboard during charging giving too low voltage to batery
i have 2 iphone 4. one is locked to some network and second I bought cheap because it have broken screen. i test it both and both of them charged very fast. than I put logic board from broken iphone to locked and than i normally turn on iphone and everything works normally but when i connect charger cames icon for charging but batery pecentage became lower and lower. can it maybe be because I didnt put all screws. and why are input to motherboard 5 V and port for batery have 1.2 V. now i check again now it is 0.4 v? any help?
Is this a good question?