Ever go up in a tall building? Your phone sees more towers. But actually, we don't know that "towers my phone sees" is the actual mechanism here. Apple hasn't

Ever go up in a tall building? Your phone sees more towers. But actually, we don't know that "towers my phone sees" is the actual mechanism here. Apple hasn't explained the algorithm they use to determine what location data to send to the phone. Perhaps they're saying "100 miles" because that's what they do -- send tower data for up to 100 miles around the current tower, depending on tower density for that location.