Can't click on Apps, answer phone calls or restart iPhone 13 Pro Max

• Still not solved --> Force restart iPhone - Apple Support

• Follow the Apple article to resolve the issue --> If your iPhone, iPad, or iPod touch won't turn on or is frozen ...

Try a "forced" restart, using these instructions:

Press and quickly release the volume up button, press and quickly release the volume down button, then press and hold the side (power) button. Only when the Apple logo appears (it might take 10-20 seconds), release that button (ignore all other screens that might appear, the one with the "slider" to turn the device off included).

Regards

Giulio