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GPS apps that display location supposedly work without the SIM however I don't know how well without the assistance of the cell towers. Maps will not work without the SIM, unless you're on Wi-Fi, since the map data must be downloaded from the internet.
Sorry, there was a problem. Please try again later.I would think you'd need wifi to use the GPS. I have a GPS, so I don't use the phone for that. But I would guess it would need wifi to get the coordinates of where you are and where you're going. Hope this helps.
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