In this article Dan Hesse wouldn't confirm the Supersonic BUT ..."Hesse declined to comment on rumors about the HTC Supersonic, which has been speculated as Sprint's first dual-mode 3G/4G device. However, he said Sprint's planned dual-mode gadgets would take advantage of greater processing power, faster speeds and bigger screens--thereby giving customers a better video experience. "Because you can download data so much faster, the video experience will be so much better on 4G," he said. "And you'll see larger, higher-resolution screens generally on 4G." Sounds like the Supersonic to me!!
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http://www.fiercewireless.com/story/...#ixzz0f9qZyn5M