Will a dark(black) theme on SPV E200 make battery last long

[Guest harshal]

Just trying to put things together. A black screen will use less battery since the pixels do not have to be illuminated. Is this correct? Any opinions about using a dark theme like Smoothscreen V2 on an SPV E200 and noticing an increase in battery life? Please give me your feedback.

[Guest drblow]

Sounds a bit wild to me m8!! :shock: I've used loads of black themes in the past and not one of them made any noticeable difference to the battery life. If you want to see how black, check the homescreen downloads section for my 'The Grid' homescreen.

[Guest zeta101]

this topid has been talked about before i think. But, im pretty sure it wont make a difference, and its because the colour black is not made by having the pixels "turned off"...just look at the screen when lcd is turned off, its not black, its a pale green.

[Guest scott2eyes]

There's a light behind the screen that's always on- the colour of the pixels doesn't affect that light. It just affects the colour of the liquid crystal that the light then passes through.

I have no idea whether different coloured pixels use different amounts of electricity- I would guess not (or at least that the difference would be so tiny as to be negligible), but that's just a semi-educated guess.

[Guest midnight]

already been answered, but yeh, no difference whatsoever about the use of colours in homescreens, the battery life will always be the same. Even black pixels are illuminated the same as any other coloured pixels :D

The only real way of improving battery life is to change the length of time the backlight stays on.

[Guest Exodia]

Having a dark screen may actually increase the power consumption.... but only by a tiny amount.

Liquid Crystals work by twisting/untwisting to either block or allow light to pass through. An electrical charge is given to an LC so that it twists to block light, and the charge is lessened or taken away to allow light to pass through. So, an LCD will consume more power when producing dark scenes, but the amount is tiny and is overshadowed by the power consumption of the backlight.

When OLED technology gets better at producing decent sized full color screens, we'll start getting much better battery life out of our phones. OLED is the future and will eventually replace all display technology. :D

[Guest MrMagoo]

Ok, so it seems agreed that black is not inherently better, but there are side issues which come into play...

I use a black background and white text (very large font size as well) on the home screen - and it does save battery juice - why? because I can then read it without having to make the backlight come on! Of course there are other colour schemes which would work in this way, it is not neccessary to use black - for instance blue and yellow might also work (I just find that anything other than black is ugly).

In my estimation, not having the backlight come on does save battery life and so it could be said that in my case having a black scheme does help...

:D

[Guest drblow]

thats what i like - a bit of lateral thinking! nice one magoo! :0) Posted from my SmartPhone!