iPhone 15 PM / ios 17.1.1 tap to wake occasionally not working

I understand that you're experiencing an issue with the tap to wake feature on your iPhone 15 Pro Max. It's frustrating when something like this happens, especially when it seems like there's no easy fix.

I've done some research and found that these steps may fix the issue faced by you.

1. Sometimes, a simple restart can resolve temporary software glitches. Turn off your iPhone, wait for a few seconds, and then turn it back on.
   1. Restart the device. That's it.
   2. Still not solved --> Force restart iPhone - Apple Support
2. If the issue persists, you can try resetting all settings on your iPhone. This will not erase your data but will reset all personalized settings to their default values. Go to Settings > General > Transfer & Reset > Reset > Reset All Settings and confirm the action. Note that you will need to reconfigure your settings afterward. All settings—including network settings, the keyboard dictionary, the Home screen layout, location settings, privacy settings, and Apple Pay cards—are removed or reset to their defaults. No data or media are deleted.
   1. Reset All Settings: Return iPhone settings to their defaults - Apple Support:- Return iPhone settings to their defaults
   2. You can return settings to their defaults without erasing your content.
   3. If you want to save your settings, back up your iPhone before returning them to their defaults. For example, if you’re trying to solve a problem but returning settings to their defaults doesn’t help, you might want to restore your previous settings from a backup.
3. Make sure you have the latest updates installed.
   1. Update Over-the-Air (OTA) —> Update your iPhone or iPad - Apple Support (IN)
   2. Update using iTunes/Finder —> Update your iPhone, iPad, or iPod touch - Apple Support (IN)

If none of the above steps resolve the issue, it is recommended to reach out to Apple Support or visit an authorized service center for further assistance. They can provide specific guidance based on your device model and iOS version.

I think I fixed this for myself, so I'll ask: Have you tried going to Settings > Accessibility > Touch > Tap or Swipe to Wake, and switched that on?

I'm having this problem with a new, $1500 iPhone 15 Pro right out of the box. The only difference being that it doesn't "occasionally" not work, it's never worked. Is there any reason I shouldn't just insist that Apple replace it?