I got a second-hand Xperia XA2 Ultra Dual SIM to install Sailfish X on. The device seemed physically ok, with minimal wear and tear.
It had been factory reset, so on booting up I did the Android updates, installed the Amazbit app that I needed to create an account, and then started the Sailfish X installation process.
Sailfish X install went fine, everything just as the install instructions said, and the phone operated for a day or two with no problems other than Bluetooth pairing with my car (and only my car) and getting MMS settings right.
But then it started randomly shutting down. Sometimes it would run for hours, sometimes wouldn’t get any farther than the password for the encrypted storage on boot.
Of course I’d installed some of my favorite apps after flashing, so I guess any of those could be to blame. Also, I can’t be 100% sure the hardware isn’t defective. It ran Android for several hours with no issues, but it’s run SFOS X for that long without crashing, too. Like I said, it looked physically fine . . .
So what’s the next step to determine if I’ve got defective hardware or a SFOS software problem? The shutdowns can occur while using the device or while it’s sitting alone on a desk. When it shuts down in my hand I haven’t noticed any excessive heat. It has shutdown while running on battery and while attached to a charger.
Any troubleshooting suggestions would be appreciated. Right now, I can’t use it as a daily-driver phone, so I need to determine if I need to sell it for parts or if I’ve got a software problem that can be resolved.