iPhone 3G camera problems to use current location. When I take photos, my iPhone 3G camera would ask me whether to allow it to use my current location function or not? is it an iphone camera problem?

its not a iphone camera problem, its a feature called geo tagging. basically your iphone syncs your gps location to your camera, so when you take a picture, it can record exactly where the picture was taken.
you can try to set the default to never geo tag, then you will take photo directly.

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