It looks like the world may in fact be closer to a fourth-generation wireless networked world phone than previously thought. Vodafone, AT&T, and Verizon Wireless, among others, have already committed to the LTE protocol for next-generation voice and fast data connections. Now, regional carrier MetroPCS has also announced its intentions to adopt LTE for its fourth generation infrastructure, according to Engadget Mobile. MetroPCS will be aggressively building out their LTE system, a task which may be easier for a smaller regional carrier with a smaller footprint than mega-carriers like AT&T and Verizon Wireless in the United States.
MetroPCS already offers competitive voice, data, and messaging packages on its footprint. The only problems are that you have to live in an area that MetroPCS services and that you are limited by the devices offered by the carrier at the present.
Hopefully, the carriers can establish affordable roaming agreements to blanket more areas and provide world phone services for those frequent flyers.