As I recall an iPhone records it's movement and location history. Obviously this can be a problem. Please discuss this feature and how to erase the memory and prevent recording if desirable. thanks

Simple as that ...

But I'm going to post here just so all who don't know how to turn off their find iPhone can do it....  

Go into settings , go to icloud scroll down to find my iPhone & turn it off!!!  Simple as that!!!  

Miss you Minnesota!!! I hope to see you soon!!!  
Xoxo
Gem

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How do I check to see what my phone has recorded for my travels?

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Best to look online for the manual for your phone model or just search using your phone model and how to check what it has recorded and how to delete it and disable that function.

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They may or may not use iPhones.  In any event, all the information is useful.

Now all you have to do is disable cell tower triangulation and license plate cameras.  

True but I doubt LE is going to use those kinds of resources for prostitution and just being at a location doesn't prove anything.  I believe most people want to disable the tracking so that other people, such as SO's, can't track their movements.

Sure.  Just don't get complacent and think this one thing solves everything.  And don't forget that your car GPS can store info as well.