Spray fucking sucks. Half of it stays in the air. Horrible for the environment, air quality. You will also inhale a good portion of it. Please, do not use those in shared spaces, such as gym lockers… I have asthma and it immediately exacerbates it.

Do you buy used phones? How do you deal with the battery? Used phones generally have old batteries, no?

I just buy a cheap/budget (mid?) phone, 200 EUR max, every 5 years or so…

It is a bit weird that AirVPN has not been audited…

Yes, I use mullvad VPN on Linux. It works fine. You don’t need their client, of course, but it is good.