On 2017-12-21 12:06, Bill W wrote:
On Thu, 21 Dec 2017 04:50:33 -0800 (PST), RichA
wrote:

http://www.bbc.com/news/technology-42438745

Why the scare quotes around "save batteries"? It appears that's
exactly what their intention is.

This shouldn't come as a discovery. It should be in Apple's
documentation online.