Detailed Product Description GeneralGSM 850 / 900 / 1800 / 1900 HSDPA 900 / 1900 / 2100 HSDPA 850 / 1900 / 2100 - XPERIA X1a2008, FebruaryAvailable. Released 2008, OctoberSize110.5 x 52.6 x 17 mm 145 gDisplayTFT resistive touchscreen, 65K colors800 x 480 pixels, 3.0 inches - Full QWERTY keyboard- Optical trackpadSoundVibration; Downloadable polyphonic, MP3 ringtones, composerYes - 3.5 mm audio ...