Home » Apple » Set up and use RTT and TTY on iPhone
If you turned on Hardware TTY in Settings, connect iPhone to your TTY device using the iPhone TTY Adapter. If Software TTY is also turned on, incoming calls default to Hardware TTY. For information about using a particular TTY device, see the documentation that came with it.
References
Related Posts
Restart iPhone instructionsRestart iPhone instructions If your iPhone isn’t working right, try restarting it. Turn iPhone off then on To…
Use Apple Watch with iPhoneWhen you’re wearing your Apple Watch (Series 3 and later), you can use it to securely unlock your iPhone (models…