How to detect if your iPhone tempered glass is cracked or just scratched

When you drop your phone and see a hairline crack, your heart stops. Did you break your expensive phone screen, or is it just the protector? Let's check cracked screen guard vs cracked screen clues.

Gently run your fingernail over the crack. If your nail catches on the crack, it is on the outer surface of the tempered glass.

For complete peace of mind, lift a corner of the screen protector slightly. If the crack moves with the protector, your actual screen is perfectly safe.