Digi International® announced that the Digi TransPort® WR31 intelligent 4G LTE router has been certified to operate on Sprint's 4G LTE M2M networks across North America. The certification signifies that the Digi TransPort WR31 LTE router has met Sprint's current testing standards and is officially approved for use on the Sprint network. As part of the certification process, the WR31 antenna has been pre-certified for use on the network, and the device has also passed pre-certification for OMA, which focuses on network protocol testing for network control of the device. Data Link testing for the WR31 was also completed as part of the certification process.