he Samsung BlackJack comes to Sprint as the Ace (SPH-i325). This a both a Sprint CDMA phone and a GSM world phone. The GSM works only overseas, not on US bands, so get this phone if you're a Sprint customer with world roaming needs, not because you wish to use GSM in the US. The Ace is a super-slim Windows Mobile 6 Standard Edition smartphone with a front-facing QWERTY thumb keyboard and a landscape QVGA display. It runs on a responsive XScale 312MHz processor and has a microSD card slot for expansion. The Samsung Ace has a 1.3 megapixel camera that takes above average photos, EVDO for data and it supports Sprint TV. Sorry, no WiFi or GPS here.