Holding a cool gadget in my hand (CELL PHONE) I feel very happy for being connected to whole word. It does not only help to communicate but now they are coming up with large number of applications. But always one question clicks in my mind that who created this tremendous instrument, and when it was launched for the first time. Can any one give me details about the cell phone time line. Also tell me about the changes observed in the cell phones since then to till date, so that I can easily understand that technology is developing at what speed.