

You don’t even have to do it with pen and paper. You can install whatever operating system and software you want on your computer. If blocking certain resources on the internet is an issue, you could torrent public keys, use tor, use i2p, or worst case scenario deliver a USB drive to your friend’s door.
(you may want to post this to !privacy@lemmy.ml or a similar community… I suppose GOS uses the Linux kernel technically but I think this community is for desktop Linux lol)
GOS is really nice. It’s very seamless and user-friendly, whilst still being very unbloated and minimal. You still have everything you’d expect to have on a phone but the environment is nicely minimal and lets you only install the software you want.
I’ve been using GOS as my exclusive mobile OS for many years, never had any technical problems with it.
You can use bluetooth headphones or usb-c headphones. Including the bluetooth headphones google sells. Afaik they are still just bluetooth headphones.
Easy: https://wiki.archlinux.org/title/Media_Transfer_Protocol