the platform and devices are kinda counter to principles of privacy. the towers track you, "free" software where your data is the product, the panopticon of everyone having a camera... Places that need to actually be secure ban them. You can get by without a smart phone just fine if you have a regular computer but then you transfer all the vulnerability to that device, it's just not physically with you and you have a little bit better control over it if you know or care enough to make the efforts.