Sprint on Thursday announced the first markets that will be upgraded with 4G LTE service this year ... texting and calling to and from any mobile phone in America while on the Sprint network.

Sprint lights up LTE in four new markets By Dan Graziano Updated Dec 19th, 2018 8:34PM EST ...

This flagship phone for Sprint starts with most of the features of the One X, then adds HD voice calling and a kickstand for media viewing. Other key features include a large HD display ...

Sprint's first 4G LTE phone with a physical keyboard, and first with world roaming. This phone sports a slide-out, five row keyboard, plus NFC, 8-megapixel main camera, front camera, memory card ...

See 5G. Sprint was the first carrier to offer a 4G network in the U.S using the WiMAX technology. It was rolled out to major cities in 2009 but was eventually dropped in favor of LTE. See WiMAX.