Apple Tablet "iSlate" Broadband Carrier Comparison
But there are more factors to be taken into account than simple scope of coverage. When it comes to average data speeds, a recent Root Wireless study found that AT&T had higher average 3G data speeds than Verizon in Chicago, Dallas, Los Angeles, New York, Seattle, San Francisco and Washington, D.C. Overall, AT&T's average 3G data speeds ranged from a low of 246Kbps in New York and a high of 428Kbps in Dallas.
Verizon, meanwhile, had average 3G speeds ranging from 195Kbps in Seattle to 259Kbps in Chicago. The study also found that both carriers had comparably low rates of 3G connectivity failure, as each carrier's connection failure averaged between 1% and 3% for all seven cities.