My iPhone 13 pro max is flickering

Hi nafiul12,

If you haven't done so yet, restart your iPhone. Although simple, this step can help correct some unexpected issues. It's a good idea to make sure your iPhone is running the latest iOS version since this can help with overall performance: Apple security updates. Be sure to backup your iPhone before installing any available updates. If you have a case or screen protector, see if removing them helps at all.

If the issue persists, reach out to Apple Support directly so they can look into this with you further. They can be contacted here: Get Support, or by calling the most applicable phone number from this list: Contact Apple for support and service.

Cheers.