A few years ago when 4G was the Big New Thing, Sprint bet it all on black and dumped their efforts into bringing WiMAX to subscribers nationwide (except where you live). It seemed like a reasonable choice at the time since LTE was still wearing water wings, and the company wanted to be the first U.S. carrier to hold the 4G title. Now, Sprint is in the awkward position of needing to transform their existing WiMAX network to LTE. Luckily for them, the existing infrastructure can be converted to the superior technology with only relatively minor changes—although current 4G devices will be abandoned come 2015.
Sprint plans to start rolling out their LTE network, as well as compatible devices, in the third quarter of 2012. They hope to yet again blanket 120 million customers in blazing 4G by the end of next year, and 250 million by the end of 2013.