Your phone communicates with the outside world constantly. It connects to the wifi, it connects to the mobile network. This leaves behind a series of markers that record a great deal of information about your whereabouts and activities.

If you find this undesirable, there are steps you can take to minimize it. Clearly however, if you want to be contactable then there’s a trade-off. Fly below the radar only if you don’t need to be reached.

Two simple measures you can take are to disconnect from wifi and from the mobile network. That takes out the two most obvious signals, but won’t make you invisible. This also has the advantage of preserving battery life.
Your MAC address (machine access code) remains as an identity marker. The MAC address can be masked or ‘spoofed’, to remove this identifier.

Posted in: Security