Then, if needed, users can enter another separate e-mail address that other callers can use to find them.
On the i Phone 4, Face Time works much like making a phone call.
Still, the option to make video calls, even of slightly poorer quality, wouldn't hurt.
Google Chat, Fring, oo Voo, Skype, and Tango each work over 3G and 4G data networks as well as Wi-Fi.
We experienced no dropped calls, laggy signals, or out-of-sync video and audio.