It handles the components — specifically, the user interface elements for phone calls, SIM card management, and network-related notifications. Examples include:
: Provides the buttons for Mute , Speaker , Hold , and the keypad. com.samsung.android.app.telephonyui
Apps like Truecaller, Drupe, or even Google’s Phone app (if set as default) can intercept telephony events. If they have bugs, they force the Samsung telephony UI to crash. It handles the components — specifically, the user
You may be unable to switch SIM cards, access "Mobile Networks" in Settings, or toggle mobile data in the status bar. It handles the components — specifically