Chosen Solution

Hello, I have a very wired issue here, I have replaced an charging port on iPhone XS max everything is working fine but after around each 2.5 minutes the phone is restarting. Here is what I have tried: I inspected the components on the board (they look fine)Took one by one each connector thinking that could be a camera issue etc.Resetting the all settings.Replacing the batteryTurning on without the charging port connector plugged in Now I am kind of out of options, any help would be great… Update (07/23/2020) I found the issue and actually Chris you are right, it will still reboot even if the port is disconnected or connected. The problem is the Charging port must be OEM or genuine. I tested around 3 ports and same problem, the I moved the motherboard into genuine frame having the original port and is working like charm. I hope this it will help others as I spent plenty of hours believing that is a board issue.

Your replacement charge port is probably faulty. You need to source an original from somewhere. About 90% of the aftermarket dock connectors will give you this problem on the X series and above.

All right Chris, but even if I have the charging flex connector out from the board is doing the same.