Please tell us some basic information before asking for help: Model Name: Zenfone 7 Pro Firmware Version: 220.127.116.11 Rooted or not: No Frequency of Occurrence: Random APP Name & APP Version (If your issue relates to the app): GPS Test, Google Maps etc ======================================== The compass was not working right until I restarted the phone. Calibration did not work at all, as it was twitching all over the place and had large error. After restart I was able to calibrate the compass within 1 minute and it's back to normal again. I noticed this as I was comparing the Zenfone to another phone and used the GPS Test app. In Google Maps the compass was completely wrong. The other phone had no issue whatsoever and the compass is back to normal after restart on the Zenfone. FYI: I am using the Rhinoshield case with the lid closed 99.9% of the time. Opening or closing the lid or removing the case barely affected the compass. See video. Up should be nearly exactly South (lines on the table are W-E, another phone does this without problem), but it's showing I dunno what, even though I tried calibrating multiple times all over my home. I don't know if the issue is new, sorry, I lost count of random issues.