This is certainly not expected behaviour with our Galaxy A52 5G! We would recommend performing a Soft reset by pressing and holding the Volume Down and Power button at the same time until your phone reboots, then check for any software updates through Settings > Software update > Download and install. If the display issue continues, please don't hesitate to contact our Support Team through the 'Support' page on our Samsung UK website. We hope this helps! ^LP at Samsung Support####[['display', 'Screen#General', 'negative']]