I’m having occasional trouble with the Fairphone 2 Open OS freezing / hanging.
This as far as I can remember so far only happened in exactly two different but similar situations: Either when the phone rings when somebody calls, or when the alarm goes off.
In such situations, the touchscreen is unresponsive (so I cannot accept the call / turn off the alarm).
Also, the power button is not turning off the screen, it just stays on, the phone keeps ringing / the alarm keeps ringing.
In both situations, the screen is still updating, i.e. the animations indicating the expected motion are still moving).
Also, holding and pressing the power button 10-15 seconds will make the phone reboot.
Also, in one occasion, after waiting for half a minute or so, this message about an app being busy (phone in that case) was shown, I could terminate it, and the phone became responsive without restart.
It seems a bit similar to what’s described here:
But there most people describe that either the power button works (i.e. they press the power button twice to turn the screen off and on again, and then the freeze is gone - which doesn’t work in my case). Or they describe that taking out the battery, waiting a bit and replacing it is the only way to fix this for them, which also is not the case for me. One person remarked that their phone screen still rotated while frozen - cannot attest to that, as I typically have automatic screen rotation turned off. I have removed and re-attached the screen module, but the problem persists. For me this issue occurs with the phone not being plugged into the charger. It isn’t occurring that often (maybe once every 1-2 weeks) at the moment, so it’s not a big issue. I will keep a note of the occurrences as they happen, maybe a pattern turns up!
From the behaviour I see, I think it might be some specific bugs in those two apps (or maybe something to do with the “ringing” animation, it seems to be similar between phone and alarm)?
The phone does not seem to get especially warm though, so I don’t believe the apps (or the animation) are completely running amok.