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i bought a used phone a couple weeks ago but everytime i charge it, it will not charge past 35 or 38, that’s as far as it goes. i tried changing the charger and the battery but nothing seems to work. i have to be charging it a lot. i dont know what to do. can someone please help me.

Have you try to change the charging board? If you have changed all the parts relating to charge and still all failed, there maybe something wrong with the motherboard.

Have you tried replacing the battery in the phone?