T-Mobile may be testing its LTE network in several additional cities above the two that it has already announced are complete. According to data collected by OpenSignal, which makes diagnostic software that many engineers use to test networks, there is some LTE network activity on T-Mobile in at least 9 different cities in the U.S. On top of the previously announced Las Vegas and Kansas City, the network is available in some capacity in New York, New Orleans, Denver, San Diego, San Jose, San Francisco and naturally Bellevue, WA where the company is headquartered.

OpenSignal has posted some preliminary speeds that they're seeing, which fall in line with what we've seen before. It's hard to take those as any indication of the speeds when the network officially launches, however. T-Mobile is set to unveil something at an event in New York City on March 26th, so we may be hearing a whole lot more about their LTE plans next week.

Source: OpenSignal