Handset sales slowing in U.S. amid worsening economy.

"Good and bad news for the U.S. mobile wireless industry when it comes to the worsening economy. The bad news: Consumers' purchases of new mobile devices declined in the first quarter for the first time in many years. The good news: The decline tended to concentrate around customers using prepaid and among the middle class. The higher end market that features higher ARPU customers that heavily use the more sophisticated devices continued to grow."