Hi Fitsum!
If your iPhone 13 says "camera is not recognized," here are a few steps you can try to troubleshoot the issue:
# ***Restart Your iPhone***: Sometimes a simple restart can resolve temporary glitches.
# ***Check for Software Updates***: Go to ***Settings > General > Software Update*** and make sure your iPhone is running the latest version of iOS.
# ***Inspect the Camera***: Make sure the camera lens is clean and free of any debris.
# ***Reset All Settings***: Go to ***Settings > General > Reset > Reset All Settings***. This won’t delete your data but will reset system settings.
# ***Restore Your iPhone***: If the issue persists, consider backing up your data and performing a factory reset. Go to ***Settings > General > Transfer or Reset iPhone > Erase All Content and Settings***.
# If you have the skills, open the device and try reseating the camera ribbon cable. if not you can see if a local repair shop will reseat that cable for you.
Happy Fixing!