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Hello, few days ago I replaced the Battery of my Iphone 6 but somehow the shopkeeper lost on the screw of Metal plate shield of battery connector and the phone keep restarting after 10-20 seconds or sometimes in 1mins of screen on. I tried several battery with the same 1 screw metal plate shield every battery shows the same problem even my old original one.
Does Metal plate shield of Battery Connector causing the problem ? how can I fix this $@$* ?
Try to power on the device with nothing but battery and display connected, and see what happens. If still having boot loop issues, then it’s very likely an incorrect screw was used and the logic board has been damaged. 1 option could include taking it to a repair shop capable of microsoldering or data recovery.