The Samsung Galaxy Nexus and LG Viper will be the first 4G handsets to launch on Sprint’s upcoming LTE network in the second quarter, but a new report suggests the carrier will follow the phones up with a flagship launch early this summer. S4GRU on Sunday reports that a smartphone code-named the HTC Jet will hit store shelves on June 10th, nearly two years after Sprint’s iconic HTC EVO 4G launched as the carrier’s first WiMAX-enabled smartphone. According to the site, the Jet is in fact HTC’s new One X smartphone, the stunning Ice Cream Sandwich-powered flagship handset that HTC unveiled at Mobile World Congress in February. While the global version of this smartphone will be powered by a quad-core Tegra 3 processor, S4GRU reports that Sprint’s version will include a dual-core Snapdragon S4 like the variant AT&T is preparing to launch next month. The site also reports that the Galaxy Nexus and LG Viper will both become available on April 15th.