Since the debut of the iPhone, people have flocked to the phone store to buy this great tool. The iPhone does double duty and works great for teenagers who want to keep in contact with their friends or catch up on the latest social media gossip, but it's also great for business men and women who need to keep up to date with their clients and customers. With such a wide demographic of users, it's no surprise why this device is number one in sales across the country and gets such a large crowd at a new model debut.