The Apple iPhone may be America's most famous smartphone, but believe it or not it's not quite yet the most popular. Despite capturing 17% of the entire smartphone market, at last count, the iPhone 3G still only achieves second place in the US smartphone popularity wars, falling short to the one device still holding fast to its supreme reign as the country's most popular handset - the Motorola RAZ v3.

Why is this comparatively archaic smartphone that made its debut back in 2004 still a better seller in the US than even the ever-present iPhone? Possibly because it's gone down in price from an intimidating $400 to free (with contract). Or possibly because the Motorola RAZR is supported by all the major US wireless carriers, while the iPhone still only runs on the AT&T network.

The full top 5, according to recently released results from research firm, the NPD group:

1. Motorola RAZR
2. Apple iPhone 3G
3. BlackBerry Curve
4. LG Chocolate
5. BlackBerry Pearl