From my experience with previous Fairphones I can think of two possibilities:
Mobile network cell changes: When the phone switches to a new network cell, something seems to crash it. I have seen that plenty on the FP2 and very rarely on the FP4. Most likely the reason is a compatibility issue between phone/modem and the network. If that’s the case, then only updates from either - or both - sides can really fix this. If you observe a correlation in this regard, you should certainly contactsupport to make them aware of the problem.
Bending of the device - in the back pocket of your pants, for example: This has been mostly a problem for me with the FP2, not really after that. So I’d regard that as relatively unlikely. But it can’t hurt to watch for correlations here as well.
For the week I have the FP5 it rebooted randomly once and I had to reboot it a few times because it started to become very laggy over time, especially when the battery was below 10% (no battery safer kicked in or was enabled). Just sharing my experience to see if there is some pattern we can identify as a group.
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.
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.