3G is not just video calls. its just one of 3G's application.
its like the WWW or email is just one of internets application.
you cant make video calls on the 6233 as it doesnt have front facing camera.
nokia 6630 is their 1st 3G phone but it doesnt have video call capability without the accessory.
UMTS (Universal Mobile Telecommunications System) the so-called "third-generation (3G)," broadband capacity, allowing packet-based transmission of text, digitized voice, video, and multimedia at HIGHER DATA RATES.
thats why video calls is possible coz of is capacity. also faster internet access and video streaming is possible