Saravanan.M.S , via OnePlus 7 Pro , Oct 26, 2020 : Facing the issue after recent update. Front Camera popped up but it used to blacked out, tried cache clearing re-start everything didn't work out and after 2-4 days rear cam also stopped working. Went to One plus service centre, they flashed the mobile but then also it didnt work. I thought its a hardware issue but i can see many here faces the same issue. After a week Flashlight also stopped working, now after flashing by one plus service center system apps such as messages, YouTube, Amazon also not working and totally hangs when opened. So, Oneplus keep a check on it and give us a solution.