Sorry to hear this but about the usual time scale for possible motherboard failure upon FP3. If you care to input “Fairphone 3 dead” under the Q magnifier icon search facility at top right of screen, you will get the idea. As regards saving the data this is a possible short term solution:
https://forum.fairphone.com/t/2nd-sudden-death-fairphone-3/94923/15?u=aspergerguy
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