Taasz/Woof

If you have a need for high levels of privacy it’s the only way to do it, or just leave your phone at home.

It doesn’t really defeat the purpose of having a mobile phone either IMO, most stuff I do on my phone is already offline (maps, notes, taking photos, etc).

Would need to disable the cell radios, wifi and bluetooth too since those are also used to track device location.

Yeah a voltage regulator would be a bad idea, however a well designed DC-DC buck converter can be in the 95%+ efficiency range and produce very little heat.

The Pi can actually be higher in some cases in my experience.

I have a pair of passively cooled PCs with i3-7100u CPUs, RAM, and a single NVMe drive each, and they draw around 1-2W when idle.

Digikey has the official espressif dev boards, if you want decent quality ones.

The Pixel phones were the only devices with secure enough hardware to make GrapheneOS viable, that’s why they developed it for them.

It wasn’t because of some deal with google or anything like that.