Mobiles are logged at all locations whether you are phoning or not, by the phone masts/beacons. Your movements can be tracked some time back if necessary by the authorities who can also call up all your text messages. This can all be produced in court for example to show locations and messaging. This is used routinely by the police tracking criminals, and in other kinds of court cases. Your Google maps on your phone will record all your movements (I think by map/ GPS technology) and can easily be called up in 'Your timeline'. The history ages back is recorded for all to see. Dependent upon how your other internet identity is set up you may even get a monthly email with your Google movement history there for anybody to see. This means that even if you have a Punting phone, you may also have your personal phone in your car or bag or pocket when you might prefer not to be tracked. Leave it elsewhere or take the battery out.
