I cannot get away using some apps because people just won't download Signal. Other apps are necessary too for certain government-related and shop-related reasons. I don't trust any of them and I would never think of installing them on a secure phone, however maybe it is different with Graphene?
Do I need a second phone so that they do not have access to anything on my phone and would not lead to a compromized system? The apps in question are widely used apps, nothing weird or unknown, that's why I need them for some functions in a connected society's system.