The O2 XDA-II-s is the best quality PDA phone with the top half sides revealing a QWERTY keypad. The buttons give a blue light to facilitate in no light situations. The phone is a bit bulky and a bit heavy at 210 gms, which sports a touch screen TFT. The O2 XDA-II-s does not have a wi-fi but it includes 802.11b connectivity which works as a wi-fi. The O2 XDA has a VGA camera and the photos are of 640 x 480-pixel sizes and the videos can be shot at 320 x 240-pixels. Memory is reasonable at 128 Mb and also a 43 Mb flash disk. The Sound quality was quite good both when used in standard mode and in hands free mode. This phone is powered by Microsoft Windows 2003 SE Operating system. This smart phone has the display of 3.5" Transflective TFT LCD display, 64K colour with 240 x 320 dots resolution, LED back light, sensitive touch screen. Also, The phone has Flash ROM of 64MB and RAM of 64MB memory. O2 XDA-II-s has a standard battery, Li-Po 1490 mAh, that can work continuously Up to 168 h (Stand-by) and Up to 4 h (Talk time). It also has a MMC / SDIO card slot for the expandable memory. Highlights of O2 XDA-II-s * Bluetooth * WiFi 802.11b * Pocket Office(Word, Excel, Outlook) * Java enabled * MP3/MPEG4 player * WAP 2.0 * xHTML browser * Voice memo * USB port * Built-in hands free Dimension of phone is 125 x 71 x 19 mm. This smart phone is available only in black colour. O2 XDA-II-s carrry the price tag of Rs. 17500.