FP3 locking itself (screen on) unexpectedly

[dwinter]

For the past week or so, after not having this issue sincenit was new in March, my Fairphone 3 will sometimes lock itself, suddenly appearing at the locked but screen on mode. It seems to mostly happen whilst playing games, but also on Chrome and the Google popup browser thing

Tried a factory reset, and reinstall all settings/apps from cloud backup, and did happen once more since when I tested Pokémon Go and a webpage.

Has this happened to anyone else as I can’t find reports? It’s a bit random, not very reproducible except running games busily makes it more likely.

EDIT: last couple times I noticed the top left notifications jump about, one time it seemed to go from Giffgaff to O2, yet I thought it also happened on airplane mode once!?

Thoughts… RAM/CPU overuse issue? Screen loose? Problem with lock/power button? Security setting bug? Can’t decide if seems hardware or software related so what to try!

[DeepSea]

Some FP3s have a weird touchscreen (“ghost input”) issue. Try this:

FP3 touchscreen experiences ghost inputs

Hi guys, i had similar problems until the screen failed completly. My probelm was that a connection on the display itself was loose (probably from shaking etc.). I fixed it by removing the display and gently press down the silver coverage which you can see on the image below: [Slide1] There seems to be a connector from the display underneath, connecting the display input to the small board - that than seems to relay the signal to the mainboard via the connector. My phone runs now fine for th…

[dwinter]

Thanks for the input, I wasn’t having too many other random button press screen issues though, just a very occasional missed or double press.

As the service provider displayed in the top left was doing something weird, and then my phone started saying no simcard, I think it may have been dodgy connection with simcard.
I took that out, wiped and reentered it and so far have had half a day without seeing this reoccur.
(If the sim card was pulled out would android lock? No way to test in FP3 as battery blocks from taking it out whilst on)