İphone 8 plus call sensor
iPhone 8 plus turns off by showing red lines on the right of the screen while the sensor that allows the phone to turn off the screen in calls
Question marked as
Hello,
See this:
"The sensor is small, and dust accumulated over time might be one of the reasons for the proximity sensor malfunction. Use a clean cloth, preferably a microfiber cloth, and clean the display, especially near the front camera area, where the proximity sensor lies."
Also see:
Get help with the display on your iPhone, iPad, or iPod touch
Good luck.