Smartphone sales may be growing at a steady rate these days but, if NPD's latest numbers are any indication, it looks like they still have quite a ways to go before they become the norm among cellphone users. As the market research group found during its latest survey, less expensive featurephones accounted for an impressive 72% of all new handset sales in the US during the second quarter of the year, which is only a 5% drop even in the face of a 47% jump in smartphone sales (to 28% market share) over the same quarter last year -- a 14% jump in overall handset sales accounts for some of that discrepancy. According to NPD's numbers, the LG enV2 (pictured above) and Samsung Rant were among the best selling featurephones during the quarter, while the iPhone 3G and Blackberry Curve were the best selling smartphones. Other interesting tidbits include the fact that the average selling price for a phone rose 4% over the year to $87, and that WiFi capability is now found on 20% of new handsets, while 26% of new phones have touchscreens (compared to 35% with QWERTY keyboards).