Supply and demand
Carriers are quickly adding high-speed network capacity, but in the meantime, AT&T and T-Mobile are throwing another lifeline to customers in the form of Wi-Fi. Both are making it easier to connect to wireless hot spots with their phones, in an effort to deliver fast data and clear calls in areas where neither might be possible.
In this respect, AT&T has been the most aggressive of any carrier. The company said this month that customers with a Windows Mobile phone could now connect freely at any of the company’s roughly 20,000 hot spots.