Apple’s iPhone is now the best selling mobile phone in the United States, according to recent analysis by research firm NPD Group. To take the top spot in the third quarter of this year, the iPhone had to beat out the Motorola RAZR, a phone that’s been on the market since 2004. The Motorola RAZR is a thin flip feature phone, and it was actually debuted at an asking price of $600. In the ensuing years, however, it’s entered the mainstream with a variety of price drops, colors, versions and plans.