回答“Invalid Sim Card insert valid sim”Please contact ur local phone carrier. It might because the phone has SIM lock, I'll suggest you to contact ur brother to solve this problem. There is no way to unlock the SIM lock by changing parts.
回答“Why is my new home button doesn't react after 30 sec?”Tried to update the phone? A DFU might solve this issue..
回答“Battery, Charging Issues and connection”Maybe there is something wrong with Power chip... Did u tried to DFU and restore the phone to iOS10.3.1 first? Please let me know! Tks :)
回答“fingerprint id fails after screen change”Hi there! First of all, update to iOS10.3.1 will not brick ur device at all, since Apple trying to be nice to 3rd place replacement. So do u mean u can't use Touch ID at all? Is it after u reboot ur phone and it pops up "Touch ID can't be activated"? Or u stock at first setup screen? I did my screen repair recently and didn't have any issue so far, I even tried to updated to iOS10.3.2 beta, everything works perfectly.