Touch screen input delayed for 5-10 seconds after phone unlocked

[Timthephone]

Phone won't register touch input after unlocking for about 5-10 seconds after latest update.

Have tried bootloader and clearing cache which seems to help for a few hours. 

Happened after lasted Samsung update. Galaxy flip 4. Not to do with flip status happens even if phone is not closed and just locked. 

[Protonumus]

Disable Touch Sensitivity

If enabled, the Touch sensitivity setting can cause erratic behavior if no screen protector is used.

Go to Settings > Display > Touch sensitivity and toggle it off.

Review image.

[Timthephone]

Already toggled off

[Protonumus]

Check for Screen Protector Issues

If you’re using a screen protector, ensure it’s properly applied without air bubbles, dust, or peeling edges, as these can interfere with touch sensitivity. Consider removing it temporarily to test.

You don't accurately need one, unless using a digital pen or sharp nails on the screen.

These should be replaced annually, eitherway.

[Timthephone]

No screen protector applied

[Protonumus]

If you just Rebooted your Samsung device.

It's normal, to take a moment, whilst everything is being refreshed and reloaded. 😊

[Protonumus]

This gets faster with newer models, and more RAM/vRAM.

[Timthephone]

Hi, this is a new problem was never a issue before.

[Timthephone]

It is when the phone wakes from being off. Complete black screen. It won't register touch input for 5-10 seconds. The unlock button with finger print sensor works to unlock phone but I need to wait the required time before the screen works for touch.

[Protonumus]

If lockout related, make sure Accidental Touch On.