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A Day in the Life of 3G - PC World](http://www.pcworld.com/article/167391/a_day_in_the_life_of_3g.html):

During March and April, we spent a day testing the major 3G services in 13 cities across the United States. Verizon’s service showed a combination of speed and reliability, Sprint’s results lent credence to its ‘most dependable’ claim, and AT&T’s network showed fast upload speeds in most cities.