O2 XM phone. Announced Q2 2005. Features TFT, 256K colors display, 1.3 MP primary camera, 760 mAh battery, 14 MB storage.
O2 XDA IIi Windows Mobile smartphone. Announced Q4 2004. Features 3.5″ display, 1.3 MP primary camera, 1200 mAh battery, 128 MB RAM.
O2 X4 phone. Announced Q4 2004. Features TFT, 256K colors display, 1.3 MP primary camera, 750 mAh battery.
O2 X1b phone. Announced Q2 2005. Features TFT, 65K colors display, 780 mAh battery, 16 MB storage.
O2 X1i phone. Announced Q3 2004. Features TFT, 65K colors display, 820 mAh battery.
O2 X3 phone. Announced 2004. Features TFT, 256K colors display, 1.3 MP primary camera, 1240 mAh battery, 3 MB storage.
O2 XDA IIs Windows Mobile smartphone. Announced Q4 2004. Features 3.5″ display, 1490 mAh battery, 128 MB RAM.
O2 Xphone IIm Windows Mobile smartphone. Announced Q1 2005. Features 2.2″ display, TI OMAP 730 chipset, 1050 mAh battery, 32 MB storage.
O2 X2i phone. Announced Q4 2005. Features TFT, 65K colors display, 1100 mAh battery.