Giving its users such a flawed navigation tool raises questions about the company's strategy.

The striking inaccuracy and incompleteness of the mapping app that Apple handed to users with its latest software for iPhones and iPads throws into question the company's philosophy of maintaining tight control over its technology, and suggests it has lost some of its vaunted discipline.

It's clear enough that Apple was in a hurry to end its products' reliance on Google Maps, which tended to feed the coffers of the archrival maker of the dominant Android smartphone operating system. The stakes are high: roughly a quarter of mobile ad revenue comes from ads associated with maps.

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