I think we can very strongly infere that other humans are conscious from knowing that we are conscious ourselves and seeing that other peoples brains work in the same way as ours and people think and behave in a very similar way as us and also have a concept of what consciousness is that corresponds with our own. In my opinion believing that other people aren’t conscious is in the same category of beliefs as the past, the future or even the world and physical laws not existing outside of our subjective experiences. Sure you can not mathematically prove any of that but questioning it isn’t really useful for more than a philosophical exercise of scepticism. As for AI I think it is a tricky question that I can’t answer. Right now I don’t think it is but maybe in the future it will be.

In my opinion modern screens are scratch resistant enough to put in the pocket without many problems and if you need more resistance you can get a screen protecting foil or a case. If my non foldable phone would scratch too much in my pockets I wouldn’t really think about replacing it with a device that is twice as expensive and has an additional hinge that could fail.

I like the idea, but $350 is way overpriced in my opinion.

I think The 50mA is only the maximum current a device is allowed to draw. I found a documant from texas instrument that devices may deliver up to 0.5 A in a short circuit condition. So it could deliver more than 50mA.