Verizon's long-awaited 4G LTE service, promising speeds of 5-12 Mbps down and 2-5 Mbps up, is launching in 38 major metropolitan markets and over 60 airports today (get the full list here). Since no LTE-capable mobile phones exist on VZW just yet, the only way to experience LTE on the move is by getting 1 of 2 (soon to be 3) 4G USB modems. Unlike Sprint's truly unlimited 4G plans, Verizon's plans carry a data cap: $50 for 5GB or $80 for 10GB, with a $10/GB overage fee. Additionally, Mac OS X support has been left out for now. Not the ideal situation, but if you need 4G speeds and want to go with Verizon, you don't really have any other choice.

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