I’m guessing if you’re doing that to save your battery, you’d be better off 
turning your screen brightness down to zero.


Angela L Griffith
Sent from my mobile phone

> On Jan 21, 2018, at 7:46 PM, Kelly Pierce <kellyt...@gmail.com> wrote:
> 
> It is correct. this is because on LCD screens, the same amount of
> energy is used to project black on the screen as white or other
> colors. The display elements are not turned off but just turned to
> black. On OLED screens such as with the iPhone X, a black screen
> turnes off the diodes.
> 
> Kelly
> 
>> On 1/21/18, Mr. Ed <pink...@abe.midco.net> wrote:
>> Hi All,
>> 
>> I know this has been discuss way back when. To my recollection I remember
>> it
>> being said that having the screen curtain turned on does not save battery
>> power. Can anyone share any information on this as to whether this is
>> correct or not.
>> 
>> Mr. Ed
>> 
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