iPhone 5s Battery drains fast, motherboard issue
I have an iphone 5S with battery problems, the battery drains fast even if the phone is in rest mode. Ι changed battery but does not seem to work so i think that the problem is in other part of the phone, then i tried to test all the phone parts, i removed the charging port, removed the lcd and and i left the phone for some hours and i saw that in this case the battery drains fast two. About 10% in an hour. I think the problem is in the motherboard, i would appreciate if someone could help me how to check the motherboard and what to do. Thank you so much
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