in Android by (190 points)

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by (241 points)
RTT (Real-Time Text) calling on Android refers to a feature that enables real-time text communication during phone calls for individuals with hearing or speech impairments. It allows users to exchange text messages instantly as they type, eliminating the need to wait for the other person to finish speaking. RTT calling ensures a more inclusive and accessible communication experience for people who may rely on text-based communication methods.

RTT calling works by converting the typed text into voice for the recipient, or it can be displayed as text on a compatible device. This feature is typically available on Android devices running Android 9.0 (Pie) or later versions. To use RTT calling, both the caller and the recipient need to have RTT-compatible devices and a carrier that supports RTT.

 RTT calling is specific to Android devices, and similar real-time text communication features may have different names or implementations on other platforms

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