The iPhone 4s has an internet connection speed 3.5G (halfway between 3G and 4G). However, realistically, connectivity to the AT & T is far from satisfactory and iPhone 4s do not get the speed it should reach. One problem that occurs mainly in large cities like Los Angeles, San Francisco and New York, where the infrastructure of the operator does not give rough with so much traffic.
Hence the announcement of its new competitor, T-Mobile, which shows the model of the operator making a mockery of the connection "4G" of those who have an iPhone with AT & T. 4s The speed offered by T-Mobile, no doubt, is much higher. The company is prepared to offer the iPhone to its customers in more than one occasion, the leaders of AT & T have commented that there are more than one million users of T-Mobile with iPhones released.
A completely successful ad by T-Mobile.