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Motorola Inc. canceled plans at the last minute Thursday to unveil its first iTunes phone–a much-anticipated model capable of playing music bought from the popular Apple Computer Web site.

Schaumburg-based Motorola had previewed the iTunes phone to the media earlier this week, with the intent of publicly announcing it Thursday. But the company got a last-minute message from at least one wireless carrier, and indefinitely postponed the announcement–a highly unusual occurrence that analysts say proves the power of cell service providers.

The company killed the unveiling after discussions late Tuesday night with “our operators,” said Monica Rohleder, a Motorola spokeswoman.

Motorola discussed “the logistics of this product with our carriers across the globe,” she said.

The result: “We decided to wait to announce it when everybody is in sync with it.”