Successfully launching an iconic smartphone is a daunting task, and following up a blockbuster flagship phone launch is even more difficult. Apple and Samsung might make it look easy, but companies like Motorola, Nokia and RIM have shown us that the success of one phone is anything but a guarantee that sequels will be met with the same fanfare. Perhaps no recent smartphone launch better embodies that notion than the HTC EVO 4G, a smartphone that gave Sprint a much-needed smash hit when it launched in 2010, and its successor the EVO 3D, which is now all but forgotten less than a year after its debut. Now, Sprint and HTC are back again with the HTC EVO 4G LTE, a smartphone that is more than worthy of its “flagship” designation. Impressive though it may be on paper, can Sprint score an EVO 4G-sized hit with this upcoming superphone or is it destined to meet the same fate as the EVO 3D? My full review follows below.