For reference, Samsung screenshots everything shown on their televisions at regular intervals and sends these to their South Korean data centres for advertisers to use. It's called Automatic Content Recognition (ACR), which any sane country should be outright banning under international espionage laws.

Funny enough it's the OS and manufacturer I don't trust with my phone, with my PC I trust them a lot more as they're much more open and I can choose the OS.

You know what's stronger than a manufacturer's promise? 2cm of double-ply electrical tape.

For the main camera there are cases with sliding covers for many phone models. Marketed for protecting the lens from scratches, but quite effective for privacy as well

For the front camera that's a lot more difficult. You could probably modify one of those flexible screen protectors to black out the camera, but it'd be very inconvenient to take off.

Maybe there is some niche android phone that offers physical shutters, similar to the ones on Lenovo laptop webcams

Can I get a pair of camera glasses that uses AI to identify other camera glasses, and controls a moveable laser to blast the cameras on the other glasses?