Used Com.samsung.android.app.telephonyui -

: Provides the buttons for mute, speakerphone, keypad, and ending calls.

This package is responsible for the graphical and interactive elements of the phone app, including: used com.samsung.android.app.telephonyui

Furthermore, this package is used to provide various telephony-related features such as call recording, call barring, and fixed dialing. It also provides support for advanced telephony features like VoLTE (Voice over LTE) and Wi-Fi calling. : Provides the buttons for mute, speakerphone, keypad,