When the economy takes a hit, so do cell phone sales. Last quarter, mobile phone sales in the U.S. dropped 15 percent to 32 million units, according to market research firm NPD Group. But in hard times, the strongest brands also take share. And that is exactly what Apple did.

The 6.9 million iPhones it sold last quarter catapulted the $200 device into the top spot among all cell phones, even beating out the much cheaper and still-popular Motorola Razr. (Yes, they still sell that thing. They just don’t make any money off of it.)

Here are the top five phones sold last quarter, according to the NPD Group:

1. Apple iPhone 3G
2. Motorola RAZR V3 (all models)
3. RIM Blackberry Curve (all models)
4. LG Rumor
5. LG enV2

Note that the BlackBerry Curve is No.3. Who says expensive smart phones are only for geeks? Everybody is getting one.