The BlackBerry Tour Worldphone is now available from Verizon Wireless and Sprint. Although both of those networks rely on CDMA technology here in the U.S., the BlackBerry Tour is capable of switching to GSM for worldwide use. I'm not sure what other countries still use CDMA technology (maybe a few in Asia), but the rest of the world is on GSM. Will UMTS become the next global standard as we evolve into 4G networks?
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