Samsung Z Fold Series, User Manual, Page: 46 / 355

Always visible: Show the RTT call button on the keypad and during calls.
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Use external TTY keyboard: Hide the RTT keyboard when an external TTY keyboard is connected.
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TTY mode: Choose the preferred TTY mode for the keyboard in use.
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Call display while using apps
When calls are received while using other apps, they can be displayed as pop-ups. However, you can change this
setting to match your preferences.
From the Phone app, tap More options (the three vertical dots), then tap Settings, and then tap Call display while
using apps. The following options are available:
Full screen: Display an incoming call in the full screen Phone app.
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Pop-up: Display an incoming call as a pop-up at the top of the screen.
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Mini pop-up: Display an incoming call as a smaller pop-up.
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Keep calls in pop-up: Enable this option to keep calls in the pop-up after they are answered.
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