Remove Stored Wi-Fi Networks (Android)
Every network your phone has joined is stored, and network names map to street addresses in public databases. The path moved, and the one in most older guides is Samsung's, not Android's.
Topic
Location
A collection of 13 issues
Remove Stored Wi-Fi Networks (Apple)
The networks your iPhone remembers are a travel history: hotels, offices, airports, a friend's flat. Clearing the list is less alarming than the menu makes it look.
Spy Pixels - Email Tracking
Two-thirds of non-spam email carries one. You never click anything to set it off — opening the message is the entire interaction, and the sender learns roughly where you were when you did.