Using RCS is not worth dealing with a spyware phone in my estimation. And any conversations over SMS can be considered compromised by default. So I do not discuss sensitive or private information over SMS. This leaves one with a device that the Gestapo as of yet has not contrived a way to invade. The existence of any such device horrifies tyrants. They must see all and know all, and we are to trust in their benevolence to Keep Us Safe!™