RicaneliteiPhone 3G lets you transfer data while talking on the phone
Unlike the original 2.5G iPhone, which doesn't allow EDGE data connections while voice services are active, the iPhone 3G allows users to transfer data over the UTMS/HSDPA network while on telephone calls -- a significant enhancement.
Apple says:
iPhone already gives you mobile multitasking. But 3G technology lets you multitask in more places -- without connecting via Wi-Fi. Since 3G networks enable simultaneous data and voice, you can talk on the phone while surfing the web, checking email, or using Maps. All from your 3G cellular network.
