The X bundles Skype Mobile, a Verizon exclusive for BlackBerry and Android smartphones. The situation is interesting: While Skype-to-Skype calls are free, this implementation seems to be little more than a Skype number and dialer. The calls actually go over Verizon's 1xRTT network same as any other voice call. Turn the cellular radio off, and you'll find pretty quickly that you can't place calls over WiFi. As a result, call quality over Skype is exactly the same as a normal cellular call on CDMA.
It works, but what everyone is really waiting for is bona fide Skype on Android, with real VoIP and video calling support.
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Last updated July 27 2010: 2:43 PM ET