Why my iPhone 12 Pro Max started to freeze and restart on its own after I update to iOS 16.2? Any solution for this problem? Thanks

Hello viggoy,

Thank you for reaching out in Apple Support Communities. For an iPhone that continues to restart unexpectedly, we suggest to update the software on your iPhone to iOS 16.3. Updating the iOS version can help provide software improvements that may help resolve this behavior. This information is outlined in this article: If your iOS or iPadOS device restarts or displays the Apple logo or a spinning gear unexpectedly - Apple Support

If your iOS or iPadOS device restarts or displays the Apple logo or a spinning gear unexpectedly 

If your iPhone, iPad, or iPod touch unexpectedly restarts or shuts down, or displays the Apple logo or a spinning gear, learn what to do.

Check your software

Make sure that your device has the latest version of iOS or iPadOS and that your apps are up to date. If the issue continues after updating your software and apps, check your hardware.

Here's how to update the software on your iPhone:

Update your iPhone or iPad wirelessly

1. Back up your device using iCloud or your computer.

2. Plug your device into power and connect to the internet with Wi-Fi.

3. Go to Settings > General, then tap Software Update.

4. If you see more than one software update option available, choose the one that you want to install.

5. Tap Install Now. If you see Download and Install instead, tap it to download the update, enter your passcode, then tap Install Now. If you don't know your passcode, learn what to do.

These steps are outlined here: Update your iPhone or iPad - Apple Support

Kind regards.