Nokia is testing this week in the United States a new range of smartphones with Windows Phone Lumia with LTE connectivity. The tests are taking place with the collaboration of AT & T and Verizon Wireless, in order to expedite the certification process. It could be the new Nokia Lumia 900 believes that with support LTE, the fact remains that at present Windows Phone is not yet compatible with 4G networks, so its release would depend on the release of a new software update from Microsoft.