You have most likely not selected stock dialer as your dialer. Do it by selecting dialer in the app menu.For some reason the stock dialer doesn't work for me. I can call out, but when someone's calling there only the vibration (and possibly sound, not sure as phone is always in vibrate) but nothing visual on the screen, so I can't answer the call. Not even if I open the dialer manually. Tried downloading a different dialer and that works, however now I seem to have the missed call notification from the original dialer, because the count only keeps increasing. When I click it, it opens the new dialer, but next time I miss a call the notification just has one more missed call.
This has been happening ever since I upgraded (clean flash) to the Android 11 rom. Maybe I'm missing some updated firmware or something?
Just in case: I did a clean flash (vanilla), then installed nik gapps core and magisk
I had this issue right after installing even before installing any third-party dialer. I only installed a dialer because of this. Also switching back the default dialer resulted in the same behaviour.
1. Of course, you will jump to another version of android.
Noticed it. but that means the HW button will be disabled aswell. i needed HW buttons more that back gesture. its ok, i'll have just wait and patient for full HW configuration added someday on the future update.