RIM's first all-screen Curve has sashayed over to the FCC. Two models of the BlackBerry Curve 9380, the REA70UW and REB70UW, are included in the latest filing, which goes into typical laborious detail on radio frequencies and the like. Thankfully, those myriad charts and graphs reveal support for WCDMA band IV, meaning that the phone plays nice with T-Mobile's 3G network. Let's just hope that, if given the chance to strut its stuff in the US market, it follows the Curve family tradition of arriving keenly priced. We'll have to wait and see if it hits our wallet's sweet spot, but for those more interested in the phone's internals, the source link beckons below.