18 of 21Image
Motorola Razr: More than 130 million
Motorola has seen many iterations of the Razr, but saw lasting success with the original V3 series. The world's most popular clamshell phone, the now Google-owned company enjoyed runaway success after selling sold more than 130 million units in the four years it was on the market. Arguably, it kept Motorola's feature phone business for many years.
Image: CNET Asia