ATT has like a 1% LTE coverage area, the rest is covered by HSPA+ which is upgraded 3G and nowhere near 4G. Verizon's 4G network covers 196 major metro areas serving 200 million Americans.... We all know VZW has the most reliable network and I can vouch for their speeds. In my home my 4G service is faster than my ADSL service (Based on speedtest.net).