Just received Pinephone - system crashes

[rocket2nfinity]

I just ran the Postmarket OS factory test (V0.55.0 looks like the newest) from an SD card and fortunately everything tests out OK. That's a great tool for these phones! My first instinct when a computer locks up hard is to power cycle it, so I thought nothing of just pulling the battery. Any other hardware gotchas to be aware of?

Will have to play around with some more OS images to see if they're more stable than the factory-installed Manjaro. Will stick with SD card boot for now until something looks like it works well enough to flash to eMMC...

DO NOT pull the battery when the phone is on, even if it is locked up. Do a hard restart instead. It can corrupt the modem requiring reflashing the modem  firmware.

Mobian in my opinion is most functional and stable. Give it a little time and those improvements will reach the other builds.