6-10% of US wireless customers use pre-paid plans

Of the roughly 150 mln wireless users in the U.S. last year, only about 10 mln to 20 mln people used prepaid phones.

Of the roughly 150 mln wireless users in the U.S. last year, only about 10 mln to 20 mln people used prepaid phones. That's somewhere in 6-10% range. But those numbers are rising. Years after their European counterparts, major U.S. carriers have finally taken notice of the market for prepaid customers. At $2.1 bln in 2003, it was becoming difficult to ignore. The prepaid market grew 19% between 2002 and 2003, according to trade group Cellular Telecommunications & Internet Association.