My Fairphone is rebooting, seemingly random. It results in the four rotating blue dots appearing, with the Fairphone logo afterwards. It can be just the shell restarting or a full reboot, I’m not sure. It happens seemingly random: it happens my phone is idle on my nightstand and also when I’m interacting with it. It has started a couple of days ago and I have noticed it happening about 5 times a day, but it probably happens more frequently as it also occurs when the phone is idle.
I’m using the Fairphone 4 with stock Android setup. I noticed the most recent OS update to FP4.SP25.B.058.20230318 but that didn’t change the behavior. I also use the Simple Launcher Simple Launcher | F-Droid - Free and Open Source Android App Repository but I was using that specific version since its release the 18th of February, so that shouldn’t make a difference.
Is anybody else having this issue? Any recommendations to debug this?
I’m not sure if latest Android has options like “clearing the global cache” as a general cache cleanup.
I’m on /e/ OS which only has a storage manager which offers different tasks.
To clear caches it would take manually doing this per app.
But maybe as another approach try this for your (most used) apps. Probably this option is available as well on stock Android.
Settings → Apps → → Storage & cache → clear cache
Maybe reboot once again afterwards.
Does the battery and/or phone feel noticeably warm?
Does the battery sit tight in its compartment?
All contacts of the battery are clean?
What is if you put very gentle torsion on the phone with both hands or slightly tap in onto your other hands palm? Any reboots by doing this?
I couldn’t find the option to clear the cache, but I guess it shouldn’t matter as it also occurs in Safe Mode. Battery is normal size, contacts are clean. Also as it is more like a software-reboot it doesn’t seem related to the power supply.
I filed a ticket with Fairphone support. Having relied on Fairphone support in the past and having good experiences with the process I have hopes of a good outcome. Of course a malfunctioning phone is still inconvenient.
I haven’t changed a config since the last reboot, but somehow it hasn’t happened since in the last message here. Hopefully it stays that way, although the lack of a clear reason for this behavior is still concerning.
I started having very frequent (almost every day, sometimes several times a day) crashes/reboots (1-2 seconds freeze then full reboot) since two months ago or so (I think it might be starting from FP4.SP21.B.048 but I am not sure). I am not sure how to get error traces or if it is even possible with the stock OS.
In any case, I think I have managed to narrow the issue down to using 5G, as I’ve been running for 2 weeks without encountering any crash by switching the preferred network type to “4G/3G/2G”, and got a crash within 24 hours of enabling 5G again.
Without changing configurations or knowingly updating software the issue disappeared a couple days after my last update and my support request to Fairphone. It hasn’t re-occurred. Unfortunately I haven’t been able to determine the cause of the issue, still I hope my reporting here might be beneficial to others in the future.