I have the same problem. I was wondering if it’s screen related (hw or sw) issue, but maybe mobile network changes causing the issue might be feasible: I have had most of problems while moving around town at (about-ish) specific areas. While its just on the table, for example during night, no problem.
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Hi, i experience something similar. During the Last 24h IT happened from time to time that my Phone suddenly rebooted - apparently without reason.
Background:
- new Fairphone 5 with ext. sD card
- fresh installed after unwrapping
- used for 1 days via wifi
- installed esim and later WhatsApp
Observation:
happened while using camera or waiting for Moments to use the camera (Sightseeing in Paris 
)
Or using threema
AND when Not connected to a WiFi but having WiFi activated
Deactivating WiFi seemed to Stop this behaviour. There may have been one time where IT rebooted even with WiFi deactivated but I am Not Sure about that.
Bottom Line: maybe the waiting wifi
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My last random reboot was 24 hours ago… I’ve tried:
- Turn off and turn on again few settings. (pick up to wake, desktop mode, force desktop mode, Crisis alerts etc) → A restart happened.
- Using in Safe mode → A restart happened.
- Uninstalled and installed few apps again. (Easer, Flip DND, my government’s app, etc.) → A restart happened.
- Using without attached SIM card, → I don’t remember the result.
- Connect to the desktop via
USBandTCPIPto watch logcat → At this moment, no restart happened more than 10 hours.
I guess my problem is related to the hardware.
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So roaming? Is 5G enabled?
So its def not any 3. party app.
That would be interesting in my eyes.
This is discussed in another topic. It is related to 5g. You just have to disable 5g, and the reboots will be solved. Sad, but it’s true 
.
the topic linked is about the FP4, so while it might be a cause for FP5 reboots, I dont think its the definite cause.
The OP even disabled (at least partially) 4G
It is easy to test it also on a fp5. Just turn 5g off. If the reboots are gone, then post here in this forum.
Yes, switched Off now, i will report
4 Likes
hey everyone,
i had a similar experience: my fairphone 5 rebooting once to twice a day, i intially planned to post here, but i got lazy…
I tested multiples things, uninstalling apps i suspected, changed my sim to an e-sim, and then i read that thread on the fairphone 4 that mention 5G being the issue, and indeed once i disabled it it no longer crash.
On my side its ok since i don’t need 5G but if it a global issue, its kinda concerning for the phone since its marketed as 5G ready. Hopefully this is software and it will be fixed later.
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Anyway, it is disappointing Fairphone does not expose an enough number of caution of the possibility of random restart. Or is this commonly happened on whole Android ecosystem?
I’ve had random reboots on my Fairphone 4 since about a year. It’s the first and only phone I’ve had with this problem. So no, I wouldn’t say it’s an Android thing. It’s a Fairphone thing.
Hmmm - at Let Me Google That I’ve not found FP mentioned in the first hits but lot of other devices. So I’m not that convinced it only happens on FP devices…
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I Found disabling WiFi reduced/stopped the rebooting, But today I tested “WiFi on/5g Off” with the Same success.
So i assume switching modes “4g-5g” or “do i Know this WiFi” can both cause this rebooting. I will keep 5g Off for now
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Btw, do we know if everyone experience this issue ?
Or is this only a few percentage of the phones that have this issue ?
I’m thinking about using the warranty since i plant to keep this phone 10years.
@zetfunk
i don’t have any reboot problems, having enable wifi, 4g/5g, microsd card (as external storage)…
but in initial FP5 setup, i have two launcher restart, look similar as reboot but short time, not show splashscreen and too ask for pin…
after set Nova Launcher as default, problem did not appear, so maybe try Nova if with it still random rebooted your FP5?
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I also do not have reboot problems with 5G on.
I do not have a microSD card though.
I used Nova launcher since the first Day i got M fairphone 5 but i had reboots sometimes. 5g is enabled here.
Got reply from support last friday with some possible solutions. Seems like problem disappeared for me last weekend after I disabled Volte calls (“4G Calling”). No reboots at all. To test things out I turned the option back on and still, no reboots, not in locations that I previously had them or anywhere else. Havent replied to support ticket yet since I want to monitor for few additional days but hoping that just that feature was bugged and this fixed the problem.
so if this is really problem, then i understand why i don’t have reboot problem, i don’t have available VoLTE on FP5 in my Country(Czechia)+Operator(T-Mobile)