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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
Nokia 2600: ~135 million
The Finnish phone maker sold around 135 million Nokia 2600 series handsets from 2004 when the device first went on sale. A relatively unremarkable phone, it was one of the first handset series' by the company to feature a color display, though did not include a camera.
This kept the cost down and made it hugely popular thanks to its low price tag. Incremental updates in the 2610, 2626 and the 2630 handsets had additional hardware capabilities and functionality, spanning the range of many wallet sizes even for smaller, less-viable economies.
Nokia 3310/3330: ~126 million
One of the most robust phones of our times — even memes have been created around the strength of the device — the Nokia 3310 remains one of the most well-known devices on the planet. An estimated 136 million Nokia 3310 and 3330 handsets have been sold since the phone first launched just before Christmas 2000. By 2005, there were 126 million units, which was more than the 100 million phones sold by Nokia between 1991 and 1998.
Interestingly, if all the Nokia 3310 and 3330 phones were laid end-to-end, it would stretch from Helsinki, Finland to Santiago, Chile, according to the phone maker.