I’m currently traveling in Europe and I don’t have roaming on my cellphone, but somehow Google maps manage to know where I have been as soon as I connect to the hotel wi-fi.
In: Technology
GPS by itself doesn’t use data, so it’s possible to log that data then when you connect back to a data connection they can read that data and line it up with a map to see where you’ve been.
Navigation though typically uses data (and can be avoided by downloading the area to use offline).
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