I've been using an eleven-year-old, pre-paid, dumb phone for years now. It has worked for me just fine, as I do not talk on the phone much. However, I've finally made the decision to join the 21st century and get a smart phone. Would someone in the know please give me a concise, impartial run-down on the currently available technology and the pros and cons of each. (iPhone, Android, etc.)