iPhone 6 battery dies in cold weather

Replace the battery.

Fingers crossed, but the newest software update (10.2.1) seems to have fixed my issues. I was up in the mountains all day yesterday without my phone switching itself off due to the cold.

It has been confirmed by Apple that the latest update solves the issue for most users:

https://techcrunch.com/2017/02/23/apple-says-ios-10-2-1-has-reduced-unexpected-i phone-6s-shutdown-issues-by-80/

Replace the battery in the phone.

They simple don't care....

I would check the technical specs of the X and see if they are different from current models before you purchase one.

You do realize that batteries performance declines with age and use, don't you

So, erase and reinstall the software, make a backup before you do.

Took your advice and sent the a message to Feedback, not sure how much good it does, but thanks.

My iPhone 7 32gb black turned off during a phone call I went in a shop I turned it on it had 20% and then dropped to 14% to answer the iPhone 7 is no bett

Now I hear that the X has a cold weather problem😳 only thing is, they will likely fix the SOFTWARE problem because it’s a new product. Us older versions are left out int the ”Cold”!! AGAIN

If you need the phone for emergencies, replace the battery, your life is worth a few bucks.

Done hold your breath, i have had this problem for over a year and it is clear they don't want to address it.

Batteries are replaceable, people do it all the time. That addresses the problem perfectly.

That is as expected, new batteries work better than used batteries in any temperature.