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My iPhone SE always restart and sleep event in charging battery or play. if i change new motherboard it will fix this issue? i already change new battery. please help advice. Thank very much for your advice.
Yeah pry damage or a bad battery is usually the cause. There are usually 4 components right above battery connector and commonly one or more of them is pried off or damaged. May be hard to spot if not under a microscope. It’ll require someone that does micro-soldering to fix this problem if this is the case.
Restarting can be caused by some small parts also like you cameras proximity flex charging dock, I would disconnect these and see if that helps. Other causes could be the swi filter causing re boot every 2 minutes this is normall caused by pry damage. Tristar failure can also be a cause. If you decide to replace the board you could still face the same problem if the above suggestions has not been rulled out.