Here’s how to enable and use safe mode on Pixel 4 XL and Pixel 4 running Android 10.
Step 1: Long press the power button.
Step 2: Touch & hold the power off button until see this message on the screen: Reboot to safe mode.
Step 3: Tap OK.
Step 4: Now safe mode symbol appear at the bottom left of screen.
Enable and use safe mode on Pixel 4 XL when powered off
Step 1: Make sure your phone switched off, long press the power button.
Step 2: When Google logo shows on your screen, when the animation starts, press & hold your phone’s volume down button. Keep holding it until the animation ends and your phone starts in safe mode.
Step 3: Now safe mode icon appear at the bottom left of screen.