- Buy a cheap android phone from a no-name Chinese OEM.

- Run a basic script to disable app installs, phone calls and some other features.

- Never update the OS. Don't do any security patching.

- Write your own encrypted messaging app with your own crypto. Don't get any external reviews or audits.

- Resell this as a Sky ECC phone with some marketing dollars labeling it as "secure" and "private".

What do you think is more hackable, this or a regular iPhone/Samsung Galaxy/Pixel?

Consider the following two offers:

A cheap netbook from a no-name Chinese OEM, running weird software you've never heard of named 'TAILS' which doesn't auto-update or anything, and which the makers say is very secure.

A cheap phone from a no-name Chinese OEM, running weird software you've never heard of named 'Sky ECC' which doesn't auto-update or anything, and which the makers say is very secure.

You've got to be fairly knowledgeable to appraise the two options correctly.