T-Mobile has lit up its 4G wireless network in Springfield, making the state capital one of 10 markets across the country to get the faster speeds.

The carrier said its 4G network now covers more than 200 million people in 167 markets. Other new markets include Ames, Iowa, and Battle Creek, Mich.

T-Mobile launched its 4G network in Chicago last year and said it is doubling speeds in the metropolitan area as part a plan to upgrade its network in more than 25 markets by the middle of the year.

Verizon Wireless and Clearwire are also expanding and upgrading their 4G networks.

Verizon will be offering 4G service in Bloomington/Normal, Carbondale, Rockford and Springfield by the end of the year.

Clearwire said last month that it has expanded its Chicago network by 40 percent to cover an additional 1.35 million people in the area.

The number of 4G-enabled smartphones and tablets offered by the major wireless carriers should also increase as the year progresses, broadening the product portfolio beyond USB dongles for laptops. T-Mobile for example said it has 14 devices available and plans to introduce 25 gadgets in 2011.