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iPhone 4S battery issues may be down to time zone issue

Users of the recently launched iPhone 4S who have complained to Apple about a power drain have been contacted by the company and sent diagnostic files to Apple for analysis, Cnet has reported. A location-based feature in the phone that detects when the user physically moved to a different time zone and then resets the phone's clock accordingly may be the problem, the report said. The "Setting Time Zone" feature polls cell phone towers constantly to determine the phone's location, rather than doing so only on occasion.