Comment by Almondsetat

The way you have set up your argument suggests you would not use smartphones if they weren't "necessary" to live a normal life. But in that case, your smartphone can simply be one of the many black boxes you use daily, such as, for example, your public transportation or credit cards, which have a literal computer inside of them you never think about. You just create various accounts, install the apps you need, and use the phone as a tool when you are required to. Once its job is done, you tuck it away and you go on about your day.