Recently, my FP2 has started doing more random reboots than before. (IIRC I haven’t had a random reboot before like half a year ago and not as frequent as now before like a month ago.) So I sat down and read #rebootsguide and started with removing the SIM card (I only use one). Without the SIM, the FP2 restarted significantly less often than with it.
I’ve ordered a new SIM now, in hopes that this will resolve the issue; the old one worked fine though.
Out of curiosity: does anyone know why a SIM card would cause a (random) reboot?