Apple's iPhone was the most popular headset in the US for the majority of 2009, according to recently published data from Nielsen, owning four percent of an "embedded base of all subscribers" from January to October. The iPhone just squeaked past the BlackBerry 8300 series (3.7 percent), but handily beat out the RAZR V3 series (2.3 percent), and the LG enV2 (2.1 percent). While Apple has the title of the most popular handset, it is important to note that both LG and RIM hold a higher total market share when all of their handsets ...

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