What Fairphone Operating System are you using ? I wonder if you are another victim of a well known bug (at least) in the open version of FP OS:
https://forum.fairphone.com/t/fp-open-os-clock-resets-after-reboot/17635?source_topic_id=21526
What Fairphone Operating System are you using ? I wonder if you are another victim of a well known bug (at least) in the open version of FP OS:
https://forum.fairphone.com/t/fp-open-os-clock-resets-after-reboot/17635?source_topic_id=21526