As the owner of an FP4, I will not get any further FP products.
The hardware is mostly fine, but it's also meh. The speaker sucks, the microphone sucks, the camera sucks. Just talking to people on the phone is a pain, since people just can't understand me.
But worse is the software. Updates are slow (still no Android 13 on the FP4) and terribly buggy. Each update brings new bugs with it, old bugs are resolved only very slowly. One example of this is that some devices experience ghost touches. So in the newest update, they just lowered the sensitivity, so that the devices that didn't have ghost touches before now often don't register touch at all. On the forums there is a long list of known bugs. The weird thing here is that every user seems to get a random grab bag of bugs.
And lastly: There is the price. It's so incredibly expensive, that it basically invalidates any benefit you get from the repairability. If I buy a comparable phone for ~β¬400 less, I can use that money to get the battery and screen professionally replaced a few times.
So all in all, I am really not happy with the FP4, and this will most likely be my last Fairphone, unless Fairphone will finally migrate their software development to an in-house team where the devs actually use the phone themselves. Software QA is so terrible, that I can't imagine anyone at Fairphone actually using the phone themselves.