[Woofles]

Anecdotal evidence, but my 6s (which I had the battery replaced a year ago under the iPhone 6s battery replacement program) was shutting down just last week when I would walk outside, even if it was at or above 50%.

I'm really interested as to where this issue came from, because before I had the unexpected shutdowns with my 6s that Apple came out and admitted was the battery's fault, I had never had this problem with a previous iPhone (or even in the first 6-9 months that I owned the 6s).

[MBCook]

These kind of things are worse with the temperature is very cold outside. Is that the case for where you are?

[sjy]

I know three Australian iPhone 6 users who had this problem when their phones were exposed to 0 °C on holiday in Europe. I wondered whether batteries sold and used in Australia might have different specs or somehow become accustomed to the higher temperature.

[braderhart]

Sounds like very poor design and more dishonesty from Apple.