How to Use iPhone's TTY
Teletype machines allow deaf and hearing-impaired individuals to communicate using on-screen text. Your Apple iPhone has TTY capabilities allowing it to be connected to a TTY machine via an iPhone TTY adapter, which is available for purchase from Apple. You can quickly prepare your iPhone for a TTY call using the Settings menu.
Instructions
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1
Tap "Settings" on your iPhone's home menu.
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2
Scroll down and tap the "Phone" icon.
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3
Move the TTY slider to the "On" position.
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4
Connect your iPhone to your TTY machine using your iPhone TTY adapter.
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5
Review the documentation that came with your TTY machine for device-specific instructions.
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