There is a temporary solution for Pitchblack occurance after call ends:You can turn off Proximity Sensor in call Settings.Phone>Settings>Call Screen>Turn on/off Proximity Sensor
I have the same issue. I would like to address a new issue after updating Android 12 is when you open a voice message in WhatsApp the screen goes pitch black too.Known Pitchblack occurance :1.After call ends2.After opening voice message on whatsapp P...
