Sprint Nextel Corp., the No. 3 U.S. wireless provider, on Tuesday said it would begin selling three slim phones from Motorola Inc. (NYSE:MOT - news) in early November, about two years after its biggest rival, Cingular Wireless, started selling Motorola's popular Razr phone.

Sprint disappointed investors in recent quarters with weaker-than-expected subscriber growth. Analysts had blamed the shortfall partly on Sprint's phone line-up, which does not include Motorola phones that have boosted sales at rivals.

Sprint said it plans to start selling Motorola's Razr, Slvr and its newest model the Krzr in early November. Sprint invited customers who want the Krzr to register on its Web site in advance so it could contact them when the phone is available.

Cingular is a venture of AT&T Inc. (NYSE:T - news) and BellSouth Corp. (NYSE:BLS - news).

Sprint shares were up 19 cents, or more than 1 percent, at $17.06 on the New York Stock Exchange. Shares of Motorola, the world's No. 2 cell phone maker, were up 17 cents at $25.17, also on the NYSE.