If you want to answer an incoming call during an ongoing call, you need to turn on call waiting. Follow these easy instructions.
Slide your finger down the display starting from the top edge of your mobile phone.Tap the settings icon.
Tap Call settings.
Tap Additional settings.
After a moment, the current settings are displayed.Tap Call waiting to turn the function on or off.
Tap the home icon to return to the home screen.
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