I’m gonna go out on a limb here and say that the vast majority of people here don’t have such a threat model. Our threat model is mostly preventing corporations like Google and Facebook from accessing our data. If your threat model is so advanced that you need to prevent tracking via connection to a cell tower (i.e state actors targeting you), the only thing you can do short of putting your phone in a faraday cage/taking out the cellular radios/ not having a phone at all is to turn on airplane mode. This is because your phone still maintains a connection to a cell tower without a SIM card.