problem with sensors and compass - OnePlus 3 Questions & Answers

Hi.
I want ask.
Last few days my oneplus3 start randomly rebooting. More and more often. Last state was that mobile refuse to boot. I was on stock 4.1.6. I flashed 3.1.2 with Oneplus3 unbrick tool (method 2 from this site) and than OTA to 4.1.6 again. But problem still here, phone randomly restarts and sometimes wants some kind of code on black screen after restart. I dont know what code is it. I dont have any security code in settings now. When I turn phone off for few hours on another attempt usually boot normal and ask for SIM card pin.
And another problem. From flash with unbrick tool it seems that some sensors and compass are dead. Light sensor isn´t working and compass is still locked in same position. i try calibrate but without success.
you can see sensors diagnose from gps status app.
What should i try? Can it be a hardware problem? Before problem started i used compass often a always working well. Hardware reset isn´t helpful.
Thanks
Sorry for my terrible english

Nobody know? It seems that problem is with persist.img as was on oneplus 2

repaired by waranty repair.... new mainboard

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I'm having the following issues with my OnePlus 3 (stock recovery, no root):
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"3 December: I visited the SC where they concluded it was a hardware issue (motherboard: 17000/-) so I asked them to just roll back to OOS 4.5.1. Worked fine for 10-11 days"
There is your answer, there is a problem with you motherboard, you need to get it replaced, we cant diagnose a hardware problem here!
How come it works normally for a week or more if there's a problem with the motherboard?
And a hard reset seems to return the phone to its normal state.
Shmt_18 said:
How come it works normally for a week or more if there's a problem with the motherboard?
And a hard reset seems to return the phone to its normal state.
Click to expand...
Click to collapse
That just means that it is faulty and will fail after some time. This most likely means there is a bad memory sector on the board. As suggested. Get it replaced or you will keep having these issues.
Okay. Thanks for clarifying.
May I know what may be the causes for the motherboard damage? How common is it that a motherboard malfunctions?
Because there was no physical damage at all. Thanks again!
Shmt_18 said:
Okay. Thanks for clarifying.
May I know what may be the causes for the motherboard damage? How common is it that a motherboard malfunctions?
Because there was no physical damage at all. Thanks again!
Click to expand...
Click to collapse
See that is the thing. China has no real quality control standards. So it could just have been a bad board. If you look around you will see that a range of random issues seem to pop up over a short time. Yet some are just fine. Like mine. It had a faulty USB port from day one to the point that I knew it was gonna fail. (expected) So I am replacing it.

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