finding services, may limit Sprint's success at using the latest offer to boost its family customer numbers, Amoroso said. "Before this service comes down in price, I think it will be marginal," she said, estimating that about 2 percent of U.S. subscribers are interested in people-locating services. Disney has not said how much it will charge for this feature, aside from promising competitive prices. Sprint said its location service would work on 17 of its phones and these phones could be used to locate children using as many as 30 phone models. Sprint's biggest rival, Cingular, is owned by AT&T Inc. and BellSouth Corp. Verizon Wireless, the second biggest U.S. mobile provider is owned by Verizon Communications Inc. and Vodafone Group Plc. Sprint's shares were down 17 cents at $26.08 in late afternoon trade on the New York Stock Exchange. --SP 23 39 Local Time 20 39 GMT