Screenshot not working after 16.5.1(c)

1. Make sure you are pressing the buttons correctly. To take a screenshot on an iPhone 12 Pro, you need to press and hold the Volume Up button and the Side button at the same time. If you are not pressing the buttons correctly, the screenshot will not work.
2. If you have AssistiveTouch enabled on your device, it might interfere with the screenshot process. To disable AssistiveTouch, go to Settings > Accessibility > Touch > AssistiveTouch, and toggle it off.
3. Make sure your iPhone is not in Low Power Mode. When your iPhone is in Low Power Mode, some features are disabled, including the ability to take screenshots. To check if your iPhone is in Low Power Mode, go to Settings > Battery. If the Low Power Modetoggle is turned on, turn it off.
4. If you have a screen protector installed, make sure it is compatible with screenshots. Some screen protectors can interfere with the ability to take screenshots.
5. If you are using a third-party app, make sure that app is compatible with screenshots. Not all apps allow you to take screenshots.
6. 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
7. 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.
8. 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.