The biggest-selling handset of all time was the dirt-cheap Nokia 1100, launched in 2003, with over 250m sales. At a time when cell phones began offering colour screens and cameras, the stripped-down Nokia was the perfect unit for budget users, especially those in developing or underdeveloped countries. Secondhand 1100 handsets were briefly sold for over $10,000 following a rumour that they could be used to hack online money transfers.