favor of more internationally accepted LTE technology. Sprint had also announced that it entered into a 15-year agreement that included spectrum hosting, network services, 4G wholesale and 3G roaming, with LightSquared. That deal, however, was later dissolved due to regulatory issues which LightSquared was unable to resolve with the FCC. Sprint announced initial LTE deployment plans at the Sprint Strategy Update conference on October 7, 2011. Network Vision-partner Samsung began LTE deployments on October 27, 2011, in Chicago, Illinois. Sprint projected that the LTE network would cover 123 million people in 2012 and over 250 million people by the end of 2013. On January 5, 2012, Sprint announced via Twitter its first 4G LTE markets, that included Atlanta, Dallas, Houston, and San Antonio; on June 27, 2012, Sprint stated that it would launch its new 4G LTE network in the first five markets the following month and on July 15, 2012, Sprint commenced operating the LTE network. In addition to the five announced markets, it was launched in 10 other markets, with more markets to be covered by the end of the year. Sprint initially deployed LTE in the 1900 MHz PCS G block, and over time added LTE to its 1900-MHz PCS A-F block spectrum. Sprint also deployed LTE in the 850-MHz E-CLR band and the 2500-MHz BRS/EBS band. In February 2013, Sprint's Prepaid Group, which operated Virgin Mobile USA and Boost Mobile, began offering products and services using Sprint's LTE network. On April 15, 2016, it was reported that Sprint covered more than 300 million PoPs with LTE services. Sprint eventually rolled out VoLTE, although the deployment was initially limited to select markets. iOS devices newer than the iPhone 8, as well as a few select Android flagship devices, supported VoLTE on Sprint. VoLTE and Wi-Fi Calling are interoperable, and devices can transfer calls between the two networks. Calls initiated on Wi-Fi by non-VoLTE devices will transfer calls to the LTE network if Wi-Fi coverage becomes too weak to sustain the call, although they are unable to initiate calls on LTE. As a result of the Merger with T-Mobile US, the Sprint LTE network was shut down on June 30, 2022. Wireless products and services Mobile devices Sprint offered a variety of wireless and mobile broadband products from a full range of manufacturers, that were preloaded with mobile operating systems including Google's Android or Apple's iOS. Sprint's partner