Quote Originally Posted by peterfoy View Post
Just use a burner phone and they do the job but obviously some of them do have GPS and also when you connect your sim card you do sort of reveal your location so is best to purchase a burner phone with also what's called ghost simcard (other names as well) where you just tweak with your sim card and disable it's location function but still connect to your provider.
The provider always knows where your phone is. The only way out is an anonymous SIM (or issued to another person). In this case, your phone is better to leave all in another place as the sample by phone 20 meters from the location of your room is very easy to get.