Losing capacity is one thing, shutting down and refusing to start after 10 min outside is another. What use is a phone if i can't call 112 because it's cold?

Edit: Also remember that I've had Apple laptops before, and only this newer model deems it necessary to shut down.

You're right, we should just ditch them. What use are they?

The point of a mobile phone is to be usefull outdoors, and sometimes your life depends on it. There are no two ways about it in my view.

That's a battery technology limitation, you wanted a lightweight high capacity and low memory effect battery? the cost is bad temperature range. Otherwise pull out an old phone with NiMH batteries for your 911 calls

Try to use an eInk device in cold weather, its response time becomes terrible down to almost unresponsive. Again that's a technology limitation.