When it comes to US broadband, AT&T trails Comcast both in terms of speed and customers. But it is doing its best to catch up: Today the company announced that is now has more than 10 million customers who are subscribing to its U-verse High Speed Internet service. U-Verse uses a hybrid combination of fiber optic and copper networks, and it is much faster than AT&T’s older DSL networks. Nearly 60 percent of all AT&T wireline broadband subscribers are using U-Verse. Comcast has 21 million broadband subscribers, while AT&T has 16.4 million total broadband customers, including DSL. Earlier this year, AT&T rolled out U-verse High Speed Internet Power with up to 45 Mbps download speeds in 79 markets. As we have previously noted, AT&T has plans to bump up speeds up to 75 and 100 Mbps in the near future.