Originally Posted by
willzzz88
One VZW 4G SIM card, all the networks in the world!
The really short answer: VZW is implementing the NEWEST GSM technology, NEWER than most countries, only with other LTE deployments (mostly developed countries) in order to gain the latest spectral efficiency due to explosive US mobile broadband demand.
But what about the issue with VZW having unique set of bands that no other carrier has?
Specifically, there is little or no overlap with AT&T's LTE spectrum? Or perhaps with those planned by other major carriers around the world?
If they support UMTS as fallback then sure, they support devices in 3G mode. But it doesn't sound like taking VZW devices to other LTE networks or LTE devices from AT&T or Europe for that matter would work transparently on VZW.
Aside from the technical issues, there seems to be little business interest in offering prepaid services for people visiting the US for instance. Of course competitive prepaid products would undermine their postpaid contract lock-in business model.