iPhone 14 Pro backside glass broken

You can arrange repair of your iPhone either by (a) visiting the Genius Bar at your local Apple Store or Apple Authorised Service Provider (AASP) - or (b) using Apple's mail-in repair service:

Genius Bar Reservation and Apple Support Options - Apple

iPhone Repair and Service - Apple Support

The Genius Bar at the Apple Store or an authorized Apple service shop can repair the phone for about $500 (U.S.).

You can find a list of authorized repair shops in your area using this link:

Find Locations