Watching YouTube on Nokia E63 over UMTS?

That's the different between an Access Point (wifi hotspot) and BTS (Base Transceiver Station) for cellular communication (bts are usually mounted up in towers).An Access Point is only to handle a single communication,DATA.While at the same time a BTS have to handle up to 3 communication,VOICE,TEXT and DATA.Since providers main bussiness is VOICE communication,thay always put it as first priority.This mean if at the same time a huge numbers try to make phonecalls,DATA (internet) connection will defeated to let Voice goes through BTS.Voices are connected,and Data disconnected.