Even though later than most others in my surrounding, still, I eventually had a mobile phone. I&#x27;m very much into technology and science and there is no lack of money for a mobile phone.<p>In fact, I do have a device people call a mobile phone, however, I don&#x27;t use the cellular network. I don&#x27;t even have a sim card. It&#x27;s virtually a PDA.<p>The reason for me to not use the cellular network is threefold. First, I like how one spends more time with the immediate vicinity if there is no way to digitally reach out. Second, I disagree with the widespread collection and storage of connection and location data. I feel nobody has the right to make a social graph of me or track my location. Third, and most important, I want sovereignty about the machines I own. That requires a level of openness in hardware and software which available mobile phones don&#x27;t have.