Bryan, I might be wrong on this, so please don't quote me here, but if I am
understanding things correctly, I don't think it saves battery life, and
here's why more specifically:
All that really happens notably when you enable the screen curtain is that
it virtually paints a black shadening (if that be a word,) over the screen.
Think of it like this: you have a pare of sunglasses. Now, if you was to
take those and paint black paint over their lenses, that's basically in a
nutshell what you're doing with the screen curtain. You're not really per
sé making the screen power/brightness any less intense. You're basically
just drawing solid black highlight over the top of it, thus,
nulling/blacking it out.
If you really want to truely increase your battery life, your better bet
would probably be to go into settings, and turn the screen brightness all
the way down to 0%. And no, doing that plus enabling the curtain really
wouldn't probably have any ill effect, no, but I don't really think it would
help matters either. Now, that said, your screen brightness certainly would
make a huge difference.
Chris.
----- Original Message -----
From: "Bryan Jones" <openses...@me.com>
To: "OS X & iOS Accessibility" <mac-access@mac-access.net>
Sent: Saturday, May 10, 2014 11:13 AM
Subject: Re: Screen curtain on iPhone
Yes, I’ve heard this anecdote from a number of different folks over the
years. Unfortunately, AFAIK none of these folks have produced any hard
evidence to show that turning the screen curtain on actually increases
battery life. I’d love to see a controlled and replicable study to either
prove or disprove the assertions of those of us including Apple who believe
there’s no difference in battery life with or without screen curtain.
Bryan
On May 10, 2014, at 10:33 AM, Glenn <glenner...@cableone.net> wrote:
I exclusively use the screen curtain, and the battery life on my phone
exceeds expectation.
I use the iPhone 5 with the latest update, and apps update automatically,
and my bluetooth and WIFI are always on.
Glenn
----- Original Message -----
From: "Bryan Jones" <openses...@me.com>
To: "OS X & iOS Accessibility" <mac-access@mac-access.net>
Sent: Saturday, May 10, 2014 9:27 AM
Subject: Re: Screen curtain on iPhone
Last I heard, the official word from Apple Accessibility was that the IOS
screen curtain has no effect on battery life. BTW, though I’ve done no
official testing, my personal experience leads me to believe this also
holds
true for the MacOS screen curtain on Macbooks.
Bryan
On May 10, 2014, at 9:45 AM, Glenn <glenner...@cableone.net> wrote:
I would think that screen curtain being on would save more battery life,
as
I'm sure that even when it is set to zero, display processes are still
being
sent to the screen, and when screen curtain is on, I'm guessing that the
processes are not calculated by the processor.
Glenn
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