Samsung S20

[bidsnapper]

My Samsung S20 continually is turning off but not restarting unless I hold the uppeupper & lower side controls to restart. It then says PDP failed and ***** up wizard failed help? The 02 shop weren't v helpful. It's only happened since my update in Feb/march

[BandOfBrothers]

Sorry to hear this @bidsnapper 

Please try >

• Clear Cache Files from the phone's System Partition Section  > https://www.samsung.com/uk/support/mobile-devices/how-do-i-clear-the-cache-on-my-device/ You may need to insert your earphones or hook upto a powered On Laptop to access the Clear Partition Section. This may help with lag or stutters as this clears the phone of old/unused or broken cache files.There is also a Repair Apps option in the Menu System too. 
• Safe Mode  > https://www.samsung.com/uk/support/mobile-devices/how-to-start-my-galaxy-device-in-safe-mode/ turns off downloaded apps and themes etc which may highlight an app or theme that's causing conflict. 
• Ensure all your apps are updated.