Joe has excellent advice if you’re worried about cell phone tracking.
My advice is that no matter how careful you are with the applications you install or “disabling” the GPS or location services the cell phone company knows where your phone is within a few hundred yards anytime it is turned on. And with some phones it’s possible for you to think it is turned off when it actually is still functional at a level sufficient for your cell phone service provider to get location information.
As a friend of mine in the cell phone manufacturing business once told me, “I don’t know exactly what’s in the phone software. But I do know the phone only has one battery.”