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with the "call waiting" function, during an active telephone conversation, one is alerted that a second caller is trying to call. if "call waiting" is activated, a knocking sound is heard to draw attention to the second caller. the user can decide whether to accept the call (the first caller is put on hold) or reject it. if "call waiting" is deactivated, the second caller is automatically rejected.

Android 11 | One UI 3.0
Step 1: Tap on  Phone
Step 2: Open the  Menu
Step 3: Tap on  Settings
Step 4: Tap on  Supplementary services
Step 5: Enable or disable  Call waiting
  1. Tap on Phone
  2. Open the Menu
  3. Tap on Settings
  4. Tap on Supplementary services
  5. Enable or disable Call waiting
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