You can make a video call to another device which supports FaceTime. The video call can be made using either the mobile network or a WLAN. Remember, first you need to activate an Apple ID on your tablet.
Press password and key in the password for your Apple ID.
Press Sign In.
Press the Home key to return to the Home screen.
Make a video call
Press the required contact.
Press the required number or the required e-mail address.