I have an issue with my FP3. Since a couple of days my phone can be only charged very slowly. At first I tried to charge it via my laptop, but the issue was the same. I also performed twice a battery reset, which didn’t help either. So I thought maybe I’ve had the wrong equipment since I only bought myself at the beginning a usb c cable, but used some old chargers. I ordered now the original FP3 equipment, including charger and cable. The issue is still the same.
Funny though - if I plug in and out a couple of times and play with the cable as well, it sometimes work with regular or fast charging. It seems like there must be a loose contact. My phone is 8 months old and I didn’t drop it or anything like that, why this seems surprising to me.