on last Wednesday evening it happened: I was reading news on my FP1 using the the FENNEC browser, when suddenly signs and also complete words on the screen disappeared, parts of the screen started to flicker, and so on… A hard reset didn’t help. Maybe a defect of the GPU?
I have received the FP1 in Jan 2014, never installed any google-Apps or others from the google store (all you need is on F-Droid!) and was really happy with it during the last 4.5 years!
Whatever is the reason for the malfunction… As there is no longer any support for the model FP1 I had to realize that it is finally broken and I will need a new phone. Maybe a FP2 (the google-free OS is really a good argument for it)…