Iphone camera warranty
Iphone black spot on camera picture
iPhone 11, iOS 16
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If you wish, you can enter your iPhone's serial number to check on warranty
How to: Find the serial number or IMEI on your iPhone, iPad, or iPod touch
Enter serial number: to check your service and support coverage:
Check Your Service and Support Coverage - Apple Support
or
The spot may be on the exterior of the camera screen
Cleaning your iPhone – Apple Support
If needed:
Apple phone numbers around the world