The pink tint in low light conditions on your iPhone 13's rear camera could be due to a software glitch or hardware issue. Try these steps:
1. Restart Your iPhone: Sometimes a simple restart can fix minor glitches.
2. Update iOS: Ensure your iPhone is running the latest version of iOS by going to Settings > General > Software Update.
3. Reset Camera Settings: Go to Settings > General > Reset > Reset All Settings. This won't delete your data but will reset system settings.
4. Clean the Lens: Make sure the camera lens is clean and free from smudges or debris.
5. Third-Party App Test: Try using a different camera app to see if the issue persists. If it doesn't, the problem may be with the native Camera app.
If none of these steps work, contact Apple Support or visit an Apple Store for a hardware check.