Comment by kqbx

2 years ago

Reminds me of a problem that I had (many years ago) with my iPhone 4 - if I tried to boot it in a dark place, it would get stuck on the Apple logo in an infinite boot loop.

Turns out some versions of the Pangu jailbreak for iOS 7.1.x would crash during boot if the reading from the ambient light sensor was below some threshold. To this day I don't know the exact explanation of this bug, but it seems that Pangu included some unnecessary code that messed with the light sensor [1].

If you don't believe me, there is a huge reddit thread[2] with a lot of people confirming this.

[1] https://www.reddit.com/r/jailbreak/comments/294wob/jailbreak... [2] https://www.reddit.com/294wob/

4 comments

kqbx

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womod  2 years ago

That's funny, there exists a similar issue with the LG G7 that a friend of mine ran into several years ago. The fingerprint sensor on his phone just straight-up completely stopped working, and subsequent OS updates did nothing to fix it. At first we assumed it was hardware failure, and he was ready to send it to a repair shop. While investigating it I saw a comment somewhere that it had something to do with the light sensor, and after holding my thumb over it for 10 seconds it "magically" started working again after 4 months of being completely non-functional.

saagarjha  2 years ago

Seems unlikely. I don't have access to the paste but from the comment below it I think it's probably a false positive that Pangu was doing something with the sensor. (Not that I don't doubt that the sensor could be the problem, it's just that the code is not very conclusive.)