T-Mobile on Friday said it has started rolling out the first 3G network in the US to support HSPA+. Currently active through about 20 cell sites in Philadelphia, the new network gives T-Mobile the fastest mobile Internet in the country with peak downloads of 21Mbps and uploads as high as 5.76Mbps. While actual speeds are likely to be much lower, the service is about three times faster than AT&T's newly unveiled 7.2Mbps network plans.
