If you have an Android smartphone and want to do video calling from your phone, you will either need to have a Nexus S that is running Android 2.3.4 or you need fring, which is a free app that you can find in the Android Market. Today fring announced support for more Android devices including the HTC Flyer, the Samsung Droid Charge, the Nexus S, Samsung Galaxy S 2, and LG G2X, with a release of an upgrade to the fring Android app.
Fring is also the only video chat service that works across platforms by providing iPhone, Android, and Symbian apps, which means that a person running fring on their Nexus S can video chat with a person running fring on their iPhone 4. Skype also supports video chat from iPhones and the iPod Touch, but the Android version currently does not support video chat. Of course, iOS users can use Facetime, however that is limited to video chats only with other Facetime users.
In addition to being the first to support cross-platform video chat, fring is also the first to support group video calls. As many as four different people can participate in a video chat at one time, and it works on WiFi, 3G, and 4G data networks. If you have one of the supported Android phones, you will find fring in the Android Market.