Nokia 7710 is a good handset by Nokia. It is a PDA smartphone.It has got a huge touch screen with a resolution of 640 x 320 pixels.It can connect to the Internet with EGPRS/EDGE or HSCSD. Its Internet browser supports HTML/XHTML and Macromedia Flash 6 content. It also has a MP3 player with stereo audio and a megapixel camera. It has bluetooth and email supports. Also has Word, Sheet, and Presentation Viewers, Word & Sheet converter good for small office work. You can go in for this mobile if your comfortable to work with stylus and the touch screen. Over all its a good handset. But ya do remember to check in the condition of the mobile as your are going in for a secondhand one. Good Luck.