o mobile operating systems, there are only two options: iOS made by Apple (Big Tech, not private, not open source), and Android made by Google (Big Tech, even less private, only partially open source). Symbian or BlackBerry OS are long dead. GNU/Linux exists for phones (e.g. Sailfish OS, Ubuntu Touch, postmarketOS) but is not generally available preinstalled and lacks the most important mobile apps, and is hence not yet suitable as a daily driver for 99% of people.<br /><br />
In some cases there might be 