The O2 Xda li looks dashing in the all new color i.e. silver. It has the capability of supporting single network i.e. 2G. It weighs pretty good of 190 grams and is 19mm thick in size. The screen is filled with the 65000 colors and is TFT resistive touchscreen. The display is 3.5inches wide with 240x320 pixels of resolution and that built with handwriting recognition software. It has the memory storage of 128MB RAM and 96MB ROM and can increase the same with the help MMC or SDIO up to 44MB ROM. Camera is built with 1.3mega pixel and has a resolution of 1280x960pixels. It runs on the Microsoft Windows Mobile 2003 SE Pocket PC operating system. The battery provides a back up of 3 hours and 30 minutes through the Li-Po 1200 mAh battery. It has the compatibility of 2G network on GSM 900 / 1800 / 1900. Phone book contains unlimited entries so add data as much as you can.