I’ve heard back from FP Support and they supplied me with a fix that worked for me with one slight adjustment (see below):
(…)
Luckily there is a way to fix this!
Below is explained how you can do this:
- Power off your phone
- Hold the volume down button (and keep pressing it)
- Hold down the power button (and keep pressing it)
- Wait until a screen appears that is called “Factory Mode” (now release both buttons)
- Use the volume down button to go to “Items Test" and push the power button after that
- Use the volume down button to go to “G-Sensor calibration" and push the power button after that
- Put your phone on a flat (levelled) steady service (a flat floor or table)
- Use the volume down button to go to “20% Do Calibration” and push the power button after that (the G-Sensor will calibrate)
- When you see the yellow text “Cali done” you know that the calibration is done
- Now push the volume up button to go back in the menu
- Use the volume down button to go to “Gyroscope calibration” and push the power button after that
- Use the volume down button to go to “20% Do Calibration” and push the power button after that (the Gyroscope will calibrate)
- When you see the yellow text “Cali done” you know that the calibration is done
- To stop keep pushing the volume up button until you get back in the main screen
- Use the volume down button to go to “Reboot” and push the power button after that
Note: if anything goes wrong or you don’t know what to do, you can simply stop factory mode by taking out the battery.
At step #8 - doing the 20% calibration - I got returned “Cali failed”. I tried it a couple of time with no sucess. However, the 40% calibration worked (on the second try). I rebooted and auto-rotate worked as before.
@Stefan,
Although FP provided a quick fix for the problem (thanks!) they did not reply in a word to my question concerning the return of a different used phone and the similar cases that I presented providing the link to this discussion.