Now that we know HTC’s One Max is likely to be living large at AT&T, another variant for Sprint looks to have also been unmasked by the FCC. An OP3P700 version of the 6-inch, 1080p device has just passed the US regulator with Sprint’s LTE bands 25, 26 and 41, a likely sign that it’s bound for Big Yellow. We’re still not sure how much it’ll cost on contract or sans SIM, but we did see it priced in the UK at a hefty £600 ($952) with no carrier strings attached. Now’s the time to take advantage of Sprint’s new upgrade program for the behemoth handset.