My 2021 FP3 seems to be dead.
Not charging, not vibrating when plugged (2-3 cable and plugs) no charging LED, and not booting. Not seen by a usb linked computer.
Stopped working close to empty battery and i thought it just crashed out of power.
Then it refused to charge. Already happened when the battery was empty. Cleaning the female usb c port and eventually dismounting and remounting the bottom module was enough. Not here. (i might have damaged the usb female plug)
But i charged my battery in a collegue FP3 without problem, it wasnt even empty…
two options 
- the battery charged a bit before during the night even with no LED nor vibration (i let it plugged to the power plug a while)
- or the phone died before the battery was empty.
Anyway, is there a way to test few modules/wires or anything to check if something is still working ? (i have an ohmmeter @ home and also lot of electronics equipment at work)
I also lost one of the 13 screws, maybe this time, maybe the time before. Is there a screw that is mandatory to the power up ?
In the case it’s dead, do i have a way to access the memory module and get access to the files ?
In any case, even if i dismounted it down to the bottom module and cleaned contacts and the power button (it s clearly not clicking well anymore even if the printed board switch is still clicking well), i plan do dismount it all again and clean it again one last time. I also fear the usb female plug is , but not the main problem anyway as i have a full battery
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thanks for any inputs, sorry if TLTR