The Samsung i907 Epix is a high-end smartphone enabled for the 3G network. It features a full QWERTY keypad and tri-band HSDPA reception. It has a 65k-color touchscreen with stylus and handwriting recognition, as well as an optical trackpad for navigation. Its operating system is Windows Mobile 6.1, and it also includes Mobile Office Suite document editor and viewer. It has a built in GPS receiver, and the original AT&T release features the AT&T Navigator application as well. It comes with an mp3 and video player, wth microSD card slot expansion up to 16GB. It uses thread view for SMS messaging, and aso allows MMS, email and instant messaging. It is Wi-Fi receptive as well, and its CPU speed is 624MHz. The Epix is supposed to be fast and customizable, and offers users the choice between using the touch screen, keypad, or trackpad.