It's anyone's guess whether we'll see this mythical Supersonic from HTC show up at CTIA next week (wouldn't that be awesome?), but a phone identified as the HTC A9292 has recently made an appearance in yet another internal system which can't be a bad sign. As a refresher, the A9292 is popularly believed to be the Supersonic, a 4.3-inch Android-powered beast for Sprint that could become one of the carrier's very first WiMAX-enabled phones. This time around, the ph
