iPhone X auto restarting and draining battery to 0%

Hi All,

I have recently faced a problem with my iphone x please look at bellow at the failiures i have come across.

1. my phone suddenly was restarting all time and not accepting charge.

the following is what i did i changed charging port, the battery and also reinstalled IOS 12,2 the phone had reboot well after few hours i started getting ghost touch my screen was getting command without a touch than after the phone restarted and totally drained battery again to 0% i put the phone on DFU and reinstalled IOS 12.2 again after restart was a success than 5 mins later same issue again i believe its something to do with the hardware after looking around 3utools the phone looks refurbished but i still dont understand why is this issue rising after allnew hardware replaced and i have fixed so many iphone x without fail i have also managed to change IC on the lower phones for this one since i had another iPhone x which was broken i just switched those two parts as mentioned above can you please assist me here on this matter.

Regards

AR