Without data, the GPS shows nothing but a blank grid on the maps app. Not very useful.I'm under no obligation to not act like a rude madman when I go to the mall or drive my car that doesn't mean I do these crazy things.
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All iPhones have dedicated GPS chips. I'm not sure I follow you.
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It's insane more people don't realize how critical some of the sensors in devices are.
I remember when iDevices first came out with the gyroscope. Not to be confused with the accelerometer. Being able to develop for pitch and yaw is something I could never go without now.