Aio Wireless, a subsidiary of AT&T, sells the Lumia 620. On their site it says the L620 is 4G/3G capable. As far as I knew, the L620 was 3G capable, not 4G. Can anyone using their Aio-purchased L620 confirm 4G connections?
Here's a link to Aio's L620 page: Lumia 620 - Cyan
Here's a link to Aio's L620 page: Lumia 620 - Cyan