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   read more »