Dell Mini 3v - Manual (Page 27)

To end a call:
Tap End to end the call.
NOTE: Placing a new phone call before ending the current call will cause your current phone call to be placed on hold.
To dial a number using video call:
1 Tap Phone from the Home screen to open the Phone screen.
2 Tap the Phone tab at the top of the Phone screen to open the on-screen dial pad.
1 Ongoing call icon