AT&T is a long way off from switching their existing HSPA+ network into an actual 4G LTE network, but it could come sometime late this year or next year. They recently demonstrated the service hitting 28 Mbps download speeds and 10 Mbps upload speeds in Plano, Texas at AT&T corporate offices to the website GigaOm.

Keep in mind that even though these speeds are a bit faster than Verizon's 4G LTE "theoretical" maximums, this test was on an unsaturated network. You can realistically expect real world speeds in the same range as Verizon's 5-12 Mbps download and 5 Mbps upload. It remains to be seen how quickly they can roll out the service, but we will just have to wait and see.

Source: SlashGear