Screen going dark when call starts

[freibadschwimmer]

A similar (probably same) issue is discussed here:

FP2 Screen can't be reactivated during/after calls - See first post for Workarounds

Solution: Please follow the official troubleshooting tool.

archived text

Besides a badly calibrated sensor the next most common reason for this issue is dust between the proximity sensor and the screen. For more info check <a href="https://forum.fairphone.com/t/fp2-screen-cant-be-reactivated-during-after-calls-see-first-post-for-workarounds/11874/148?u=paulakreuzer">this post</a>. Cleaning tips: Clean the screen of your phone, especially the part where the proximity sensor…

Maybe you find some answers here.