This list will give you 10 of the best and most popular mobile phones in 2014. What was the most popular phone? iPhone 6 was the most popular phone in the U.S. Apple had a record-setting quarter during the last three months that ended December 31, 2014. Apple sold 74.5 million iPhones (iPhone 6 and 6 Plus) during the last three months of 2014. (January 2015 edition).