Continuing the "devil's advocate" perspective, perhaps the thinking that phones are an extension of the brain is the wrong way to think of them.

> I know it's an encrypted, secured device I always have with me

What if you didn't know that? What if you thought of it as just a suitcase?

If someone carries a notebook that contains printed pages of encrypted material, what is the expectation?

Whatever the answer to that question is, the expectation shouldn't change based on what medium the material is stored in.