I just came across to this forum thread:
http://androidforums.com/htc-desire/59486-amoled-black-wallpaper-battery-saved.html
This was also my question some times ago when I start checking HTC Desire.
Anyone can do this kind of experiment? Because if this true and have significant impact on battery level, it could be a really good way to get more juices. We know that HTC Desire battery live is not that amazing.
Benchmarking could be very simple like this:
Code:
1. Use bright wallpaper with a lot of white color and [B][COLOR="Blue"]set the brightness at maximum[/COLOR][/B]
2. [B][COLOR="Blue"]Set your phone to NOT turn-off screen automatically[/COLOR][/B]
3. Write down your battery level at start
4. Leave it turned-on for 1 hour or more and do nothing
5. Compare the battery level
You should get the battery level differences.
Then do it again with complete black background.
Or better, you can do this overnight. Just write down the start-time and battery level of the experiment and compare at the end.
We should be able to calculate the battery drain per minute!
PS: I will do this, but I have not received my HTC Desire yet
the following quote is from wikipedia
Power consumption
While an OLED will consume around 40% of the power of an LCD displaying an image which is primarily black, for the majority of images, it will consume 60–80% of the power of an LCD - however it can use over three times as much power to display an image with a white background[53] such as a document or website. This can lead to disappointing real-world battery life in mobile devices.
Click to expand...
Click to collapse
and check the following chart (not from wikipeda, from other website)
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And this is the complete presentation from Irkan post:
http://data.4dsystems.com.au/downloads/micro-OLED/Docs/4D_AMOLED_Presentation.pdf
See on page 17 for example (image attached).
I am really sure that using black background will have quite significant different on battery life. Note that this is the main reason on Microsoft Windows Phone 7, to use mainly black background.
Now, can anyone who already own HTC Desire do the "real-world" test that I suggested above?
We need to know how this power saving translated to more hour/minute battery power
since i got my phone i been using the carbon/black background but because its been only about 2 charges my battery hopefully isnt at its best yet but each time after a battery i will change the background for basic testing
cez10 said:
since i got my phone i been using the carbon/black background but because its been only about 2 charges my battery hopefully isnt at its best yet but each time after a battery i will change the background for basic testing
Click to expand...
Click to collapse
Your battery won't get better after more charges. It's at its best now and only degrade from now on. It's the chemistry of a lithium battery
Why would a black background give battery results over night when the screen is not being used, that's nonsense.
A black background only helps you a bit. Once you run an app or start browsing the effect is mostly gone.
It will help in some way for sure, especially when you use the home screen a lot. But it won't be earth shattering...
Still, the amoled screen should save power in most other situations as well when you look at the pic posted earlier.
RaptorRVL said:
Your battery won't get better after more charges. It's at its best now and only degrade from now on. It's the chemistry of a lithium battery
Why would a black background give battery results over night when the screen is not being used, that's nonsense.
A black background only helps you a bit. Once you run an app or start browsing the effect is mostly gone.
It will help in some way for sure, especially when you use the home screen a lot. But it won't be earth shattering...
Still, the amoled screen should save power in most other situations as well when you look at the pic posted earlier.
Click to expand...
Click to collapse
does the battery require calibration(fully discharge) when you receive the phone?
I think HTC should immediately, AT LEAST give an option, to view all their Sense application in reverse colors (black background). If you note,
-People
-Messages
-Mail
-Calendar
-Photos...
-Adding to it the Android Market
They ALL use white backgrounds! And these are the applications mostly used.
It doesn't make sense they missed that.
All in all ... I still can't see the sense behind using AMOLED. It's really disappointing.
cez10 said:
does the battery require calibration(fully discharge) when you receive the phone?
Click to expand...
Click to collapse
Well, that could be yes. But that depends really. That would be the only reason why the battery might 'improve'. But, I would assume that the phone will only shut down when the battery reaches a certain voltage. Until that point the percentage just falls down fast, but stays about the same in the lower percentages.
So, it could be useful to fully charge the first time and then wait/use until the phone shuts down. Then fully charge and hope the device has a nice average to show reliable percentages
salahag said:
I think HTC should immediately, AT LEAST give an option, to view all their Sense application in reverse colors (black background). If you note,
-People
-Messages
-Mail
-Calendar
-Photos...
-Adding to it the Android Market
They ALL use white backgrounds! And these are the applications mostly used.
It doesn't make sense they missed that.
All in all ... I still can't see the sense behind using AMOLED. It's really disappointing.
Click to expand...
Click to collapse
Because on average the amoled will be much more efficient. And there are more things that influence battery life.
Besides that, most people like white backgrounds much more than black ones
Grey might be a nice option. I wonder it going to 80% from white will also save around 20% of power.
RaptorRVL said:
Well, that could be yes. But that depends really. That would be the only reason why the battery might 'improve'. But, I would assume that the phone will only shut down when the battery reaches a certain voltage. Until that point the percentage just falls down fast, but stays about the same in the lower percentages.
So, it could be useful to fully charge the first time and then wait/use until the phone shuts down. Then fully charge and hope the device has a nice average to show reliable percentages
Click to expand...
Click to collapse
ok well so far i charged it with the phone off just after i received it for about 1.30h then bout 8h later I started charging while using it for a bit and then switched it off to continue charging 'overnight'. started using it heavily at 8 this morning (mainly wifi) and now its 4 and its on 37% so reckon will easily die before midnight so then can calibrate it over night
RaptorRVL said:
Because on average the amoled will be much more efficient. And there are more things that influence battery life.
Besides that, most people like white backgrounds much more than black ones
Grey might be a nice option. I wonder it going to 80% from white will also save around 20% of power.
Click to expand...
Click to collapse
I agree, it's a combination of things that we should optimize for best power durability. Yes I think gray is nice and should make a difference in power
But I disagree that it's more efficient on average, most applications have a white background, most websites have a white background, even if you use a dark wallpaper, it won't be there most of your time using the phone.
Also photos must have a relatively large black portion to use less power than LCDs.
I like the desire and was waiting for it for some time now, just disappointed. I'll wait for someone to make that background test and decide if I will buy it or probably buy it
salahag said:
I agree, it's a combination of things that we should optimize for best power durability. Yes I think gray is nice and should make a difference in power
But I disagree that it's more efficient on average, most applications have a white background, most websites have a white background, even if you use a dark wallpaper, it won't be there most of your time using the phone.
Also photos must have a relatively large black portion to use less power than LCDs.
I like the desire and was waiting for it for some time now, just disappointed. I'll wait for someone to make that background test and decide if I will buy it or probably buy it
Click to expand...
Click to collapse
I think you are making too much out of it.
Try to look at it from a different angle, all the text in those screens (usually black) save you energy! So the more text you get, the less energy it costs! A normal lcd always uses the same amount of energy.
Perhaps someone should measure the amount of 'black' being used in a text only e-mail (within the screen). And then you get a nice estimate of how much power the screen will actually use. Maybe I will do it when I find some time for it
In most cases (any other case than full white background) the AMOLED is better than TFT (more colorful, saves more power, ... etc).
so if the "white background power consumption" is an excuse for you to not get an AMOLED, than think again
irkan said:
In most cases (any other case than full white background) the AMOLED is better than TFT (more colorful, saves more power, ... etc).
Click to expand...
Click to collapse
I'm really not convinced that the Desire's AMOLED is better than TFT in any way. This is why not:
1) The longevity of these displays is questionable. From wikipedia: "AMOLED displays are prone to material degradation. However technology has been invented to circumvent this problem. Whether these mechanisms have been implemented in current applications of AMOLED displays is unknown, as are potential effects on power consumption."
2) Less accurate colour reproduction due to pixels being RRGBBG rather than the RGBRGB pattern on normal screens. The AMOLED RRGBBG pattern is used to try to avoid material degradation.
3) The Desire's 800*480 AMOLED screen does not have the same sharpness/resolution as a TFT 800*480 screen since any one pixel can not display the full range of colours (see 2). This is particularly noticeable with white text since it takes two pixels to display a white colour instead of one on a normal screen.
4) Power consumption in practice is not any better. This is proved by the fact that the HD2 has 35% more screen area powered by a 12% smaller battery, yet the battery life is at least comparable if not better.
5) Do you really want a display that makes you think twice about showing anything that's white because it'll drain the battery 3 times as fast? It would be like living in a house where you're scared to turn the lights on! Fine if you're a Goth and live in a dark world I suppose.
6) AMOLED is supposedly "more colourful" than TFT. I would suggest that "more colourful" = "less true to life". My HD2 colours are very accurate and I wouldn't want them any more colourful. Similarly I could turn the colour up on my TV to make it "more colourful" but I don't because it doesn't look right.
I love these "My thingy is better than you're thingy" debates - they can go on for ever without anyone changing their own opinion! Now if only I could get Android 2.1 with HTC Sense on my HD2...
Moandal said:
I'm really not convinced that the Desire's AMOLED is better than TFT in any way. This is why not:
1) The longevity of these displays is questionable. From wikipedia: "AMOLED displays are prone to material degradation. However technology has been invented to circumvent this problem. Whether these mechanisms have been implemented in current applications of AMOLED displays is unknown, as are potential effects on power consumption."
2) Less accurate colour reproduction due to pixels being RRGBBG rather than the RGBRGB pattern on normal screens. The AMOLED RRGBBG pattern is used to try to avoid material degradation.
3) The Desire's 800*480 AMOLED screen does not have the same sharpness/resolution as a TFT 800*480 screen since any one pixel can not display the full range of colours (see 2). This is particularly noticeable with white text since it takes two pixels to display a white colour instead of one on a normal screen.
4) Power consumption in practice is not any better. This is proved by the fact that the HD2 has 35% more screen area powered by a 12% smaller battery, yet the battery life is at least comparable if not better.
5) Do you really want a display that makes you think twice about showing anything that's white because it'll drain the battery 3 times as fast? It would be like living in a house where you're scared to turn the lights on! Fine if you're a Goth and live in a dark world I suppose.
6) AMOLED is supposedly "more colourful" than TFT. I would suggest that "more colourful" = "less true to life". My HD2 colours are very accurate and I wouldn't want them any more colourful. Similarly I could turn the colour up on my TV to make it "more colourful" but I don't because it doesn't look right.
I love these "My thingy is better than you're thingy" debates - they can go on for ever without anyone changing their own opinion! Now if only I could get Android 2.1 with HTC Sense on my HD2...
Click to expand...
Click to collapse
you only see the empty half of the cup, and even the other full half that really exists, you deny it.
if you are not convinced that that is your personal opinion, but you have to into consideration the studies that has been shown how AMOLED is more suitable than TFT in some applications (including mobile)
Since you copied wikipedia, i will copy from it and other places
advantages of AMOLED:
1. Thin and light-weight (this allow the mobile phone to be thiner and more compact, and more "MOBILE").
2. Lower power consumption (in almost all the cases but white). this is an advantage not a disadvantage. noone is forcing you to not use white bg, but if you dont use it you will save MORE than usual power, either ways IMO the battery life consumption is better than TFT (even if you used white occasionally, and normally). I highly doubt that anyone would use full pure white screens all the times.
3. better viewing angle, not a biggie, but its better than TFT viewing angle so its an advantage.
4. High color contrast ratio (Black is Black) and the other colors look better and sharper, that is the real "true to life" color, not like TFT where black and other colors are "washed out" (washed out is not true to life btw )
5. High Ambient Contrast Ratio, in fact AMOLED are suppose to look better in ALL conditions including under sun-light, however that feature has been crippled somehow by the manufacturers cuz they added a reflective layer on top of it (to better protect the screen i suppose, not sure). its still +1 for AMOLED in general.
6. Fast response time, the LEDs response faster and better to moving pictures , yes faster than the response time or TFT, AMOLED response <50uS, TFT response 3000~30000uS, so if you wanna see a movie and there is someone very speedy is racing, you will see it blurry in the TFT (and this is different than, CPU power. this is the response time of the display).
7. wide temperature operation, AMOLED can work from
-40 ~85C while TFT from -20 ~70C (I doubt that this will be useful, but hey its an advantage over TFT)
8. Significantly higher Colour Gamut, AMOLED looks brighter, sharper and more visually pleasing when tested under constant color gamut using gray levels
overall, nothing is perfect, .. but its advantages, outweighs its disadvantages
Of course using mostly black colors will not give you over night more battery life. I know that.
But at least it should give you "additional" juices compare to white or bright one.
How much additional? I don't know yet. That's why if someone could test it.
And yeah, we all know that not only the screen will influence battery life But, in this test is about to measure the screen ... so, if you want to test it, turn off all other services like WiFi/GPS/Data.
Or do you think this is silly test? Well, this just for fun and to test the theory
You know, even if it give additional 5% (from 10 hours battery life to 10 and 30 minutes, I would be happy!).
RaptorRVL said:
Your battery won't get better after more charges. It's at its best now and only degrade from now on. It's the chemistry of a lithium battery
Why would a black background give battery results over night when the screen is not being used, that's nonsense.
A black background only helps you a bit. Once you run an app or start browsing the effect is mostly gone.
It will help in some way for sure, especially when you use the home screen a lot. But it won't be earth shattering...
Still, the amoled screen should save power in most other situations as well when you look at the pic posted earlier.
Click to expand...
Click to collapse
irkan said:
you only see the empty half of the cup, and even the other full half that really exists, you deny it.
if you are not convinced that that is your personal opinion, but you have to into consideration the studies that has been shown how AMOLED is more suitable than TFT in some applications (including mobile)
Since you copied wikipedia, i will copy from it and other places
advantages of AMOLED:
1. Thin and light-weight (this allow the mobile phone to be thiner and more compact, and more "MOBILE").
2. Lower power consumption (in almost all the cases but white). this is an advantage not a disadvantage. noone is forcing you to not use white bg, but if you dont use it you will save MORE than usual power, either ways IMO the battery life consumption is better than TFT (even if you used white occasionally, and normally). I highly doubt that anyone would use full pure white screens all the times.
3. better viewing angle, not a biggie, but its better than TFT viewing angle so its an advantage.
4. High color contrast ratio (Black is Black) and the other colors look better and sharper, that is the real "true to life" color, not like TFT where black and other colors are "washed out" (washed out is not true to life btw )
5. High Ambient Contrast Ratio, in fact AMOLED are suppose to look better in ALL conditions including under sun-light, however that feature has been crippled somehow by the manufacturers cuz they added a reflective layer on top of it (to better protect the screen i suppose, not sure). its still +1 for AMOLED in general.
6. Fast response time, the LEDs response faster and better to moving pictures , yes faster than the response time or TFT, AMOLED response <50uS, TFT response 3000~30000uS, so if you wanna see a movie and there is someone very speedy is racing, you will see it blurry in the TFT (and this is different than, CPU power. this is the response time of the display).
7. wide temperature operation, AMOLED can work from
-40 ~85C while TFT from -20 ~70C (I doubt that this will be useful, but hey its an advantage over TFT)
8. Significantly higher Colour Gamut, AMOLED looks brighter, sharper and more visually pleasing when tested under constant color gamut using gray levels
overall, nothing is perfect, .. but its advantages, outweighs its disadvantages
Click to expand...
Click to collapse
In response to your "advantages":
1) If AMOLED allows the phone to be thinner and more compact, how come the HD2 is thinner than the Desire?
2) You haven't explained how the HD2 can run a 35% bigger screen with a 12% smaller battery if it's screen requires more power in real-life usage.
3) Fair enough.
4) You're talking about AMOLED displays in theory. I'm talking about the specific implementation on the Desire (and Nexus One). I don't have a Desire to compare side-by-side with the HD2. However Neowin.net do have an iPhone to compare it with, and it doesn't compare well. http://www.neowin.net/news/nexus-one039s-amoled-screen-only-uses-16-bit-color
5) "+1 for AMOLED in general" is irrelevant when we're talking about the Desire specificially. Both the Desire and the HD2 are poor, although given how poor the HD2 is, maybe the Desire does sneak a point on this one.
6) The image response on the HD2 is fast enough for any delay to be un-noticeable. Anything better than un-noticeable is still no better in practice. If you think it's noticeable on the HD2, give me a link to a review or article to back up your claims.
7) I stop operating below -20C and above +35C, never mind my phone, so this point is utterly irrelevant.
8) Same comment as 4) above.
You're grasping on to the theory of AMOLED displays in general. I'm talking about the Desire specifically and how it stands up in real life against other phones for important things like power usage and colour reproduction.
Moandal said:
In response to your "advantages":
1) If AMOLED allows the phone to be thinner and more compact, how come the HD2 is thinner than the Desire?
Click to expand...
Click to collapse
Come on, you came up with this kind of question?
The hardware is DIFFERENT, do you think ALL AMOLED devices should be this thin or that thin?
Moandal said:
2) You haven't explained how the HD2 can run a 35% bigger screen with a 12% smaller battery if it's screen requires more power in real-life usage.
Click to expand...
Click to collapse
Again, I don't think this would be an exact comparison. You simply cant, because the OS is different, the video driver is different, etc! Which one is more efficient? How do you measure real-life usage? The hardware is DIFFERENT.
You cant just factor the screen alone on this.
It would be meaningful if you come up with similar Android device that runs same level of OS but using LCD as the screen.
Moandal said:
You're grasping on to the theory of AMOLED displays in general. I'm talking about the Desire specifically and how it stands up in real life against other phones for important things like power usage and colour reproduction.
Click to expand...
Click to collapse
Please, don't bring this to a discussion about HD2 vs Desire!!!
This thread is intended to find out if "black background" could SAVE MORE BATTERY LIFE on HTC Desire.
*begging* ... please don't stir this discussion out of context.
gogol said:
This thread is intended to find out if "black background" could SAVE MORE BATTERY LIFE on HTC Desire.[/B]
Click to expand...
Click to collapse
It does
Sure, but as I said, how big is the additional battery life saving?
If it is not that significant, then forget it.
10% would be nice ... Imagine average 10 hours battery life , +10% = 11 hours
Damn! I need my HTC Desire NOW!!
irkan said:
It does
Click to expand...
Click to collapse
FYI - Can HTC tell whether your phone has an AMOLED or SLCD screen?
Short answer:
No.
Longer answer:
I bought my phone from Orange and thus the box comes Orange branded. Therefore, it doesn't say on the box whether than phone is AMOLED or SLCD (referred to as multitouch or something like that). I contacted Orange who haven't got a clue and just told me is AMOLED by reading their stock description. I contacted HTC UK and gave them the serial number of the phone. They said that at this present time there was no way for them to decipher whether I had an AMOLED or SLCD screen. There may be in the future but at the moment there is not.
The one bit of interesting information HTC could provide is that 90% of their stock is AMOLED and 10% is SLCD.
The reason I looked into this is because I can't really tell from the videos online what screen I have. There are some murmurings that all SLCD phones are bootloader 0.83 (what I have) but unfortunately not all 0.83 phones are SLCD.
http://pocketnow.com/android/how-to-tell-if-your-htc-desire-has-slcd-or-amoled-screen
Already read that. And I'd say it's actually pretty difficult to tell unless you have their exact screenshots.
And a magnifying glass!
The box for mine said "3.7-inch touch-sensitive screen", but it has the 0.75 HBOOT, so I really need to find a magnifying glass to check it.
tinytjf said:
Already read that. And I'd say it's actually pretty difficult to tell unless you have their exact screenshots.
And a magnifying glass!
Click to expand...
Click to collapse
If it's so hard to tell why bother?
It really is easy to tell
Go into a dark room and go into the settings menu (which has a black background colour). If the black is lit at all or slightly grey, you have SLCD. If it is totally black (and I really mean no light at all) you have AMOLED. I have both and it really is easy to tell them apart in by the contrast of the settings menus, not so easy otherwise.
familyhousing said:
Go into a dark room and go into the settings menu (which has a black background colour). If the black is lit at all or slightly grey, you have SLCD. If it is totally black (and I really mean no light at all) you have AMOLED. I have both and it really is easy to tell them apart in by the contrast of the settings menus, not so easy otherwise.
Click to expand...
Click to collapse
that's not entirley correct. I have Amoled, and even in a dark room, it's not 'totally' black.
BarnOwl said:
If it's so hard to tell why bother?
Click to expand...
Click to collapse
Because there are some rooting methods that require you to know whether you're on SLCD or AMOLED... Having said that there are workarounds but it would be nice to know which method before I start.
As for the dark room idea, I'll try it. Thanks.
I'm 99% sure mine has an AMOLED screen because the bootloader was 0.80 (before the 2.2 upgrade)
My box didn't mention AMOLED on the box (so it could have been either)
One thing I have noticed is that a block of white against a darker background appear to have a slight pinkish toothcomb on the left edge of the white block (eg the HTC clock widget that's usually on the main home screen.
I believe this is a sign of the pentile arrangement of pixels that you get in the Desire's AMOLED screen.
ie:
****
****
Without a magnifying glass though its difficult to be certain.
Do what I did:
http://forum.xda-developers.com/showpost.php?p=7257878&postcount=10
Take a picture of the phone with a macro zoom camera. The pentiles become easily distinguishable.
i had both amoled and slcd side by side and all i can say is that the difference is huge...
if open your browser and set text size to large and than browse to xda forums... with amoled you won't be able to read clearly without zooming in, but on slcd you will be able to read and see everything clearly..
other than that amoled is brighter and has more contrast but slcd has a lot more clearer picture, that is easily visible when you put two phones side by side
for me slcd is a lot better.
mr.vandalay said:
i had both amoled and slcd side by side and all i can say is that the difference is huge...
if open your browser and set text size to large and than browse to xda forums... with amoled you won't be able to read clearly without zooming in, but on slcd you will be able to read and see everything clearly..
other than that amoled is brighter and has more contrast but slcd has a lot more clearer picture, that is easily visible when you put two phones side by side
for me slcd is a lot better.
Click to expand...
Click to collapse
A work colleague has just received his Desire and one of the first things he did was compare it to mine. He has an SLCD screen and I have AMOLED. When placed side by side the difference is gobsmackingly obvious. On the SLCD text appears far smoother, although the colours do appear to be washed out.
I agree that the SLCD is better, but I will say that I am more than happy with my AMOLED screen.
stats101 said:
that's not entirley correct. I have Amoled, and even in a dark room, it's not 'totally' black.
Click to expand...
Click to collapse
Ok, I exaggerated a little. I actually have an AMOLED Legend and an SLCD Desire. Just for my own sanity I checked again and the Legend AMOLED screen does have totally 100% blacks, even in a completely dark environment. I assume an AMOLED Desire would be the same and hence as easily identifiable.
If you think about it, AMOLED will always produce complete blacks as each pixel is not even powered for black output. The light you report to see on an AMOLED screen can only be explained by reflection. If your screen emits light from 100% black areas then you have SLCD.
Sent from my HTC Legend using XDA App
Well,one easy way is to put it next to your computers monitor while it shows a black image.The phone should be in the settings menu.If both seem about the same colour,you have an SLCD.If the monitor's picture seems grey while the phone's is pitch black,it's AMOLED.
I hope it helps those who don't have two devices to compare.
I have both the AMOLED and SLCD Desire. It's a clear difference. Mine has no bleeding around the edges. But It's clear to see the SLCD when the Call screen is on. The AMOLED is a lot blacker where as the SLCD is more gray than black.
The colours are also a lot more vibrant and alive on AMOLED, the SLCD looks washed out. The brightness is also higher on AMOLED.
You dont need magnifying glass. Droplet of water on screen will do.
I will be getting a Desire tomorrow or the next day and I don't know whether I'll get AMOLED or SLCD, so I want to know, are their quality worlds apart? Would it really make a difference to have either one of those? Is one better? How does both of them compare to iPhone 3GS's screen?
To the average person both are very very similar and you would not notice a difference without knowing there was two sorts of screens.
Chances are you won't get a choice of which to get, it just depends what is in stock.
Stat wise SLCD takes it on paper as being the best, but only marginally.
Honestly it really doesn't matter which you get, unless you compare two devices side by side you won't even know.
Because of the pentile matrix on the AMOLED, I would go with the S-LCD. The AMOLED is said to be over saturated in dark environments, and unable to read in the sun. I'd rather have balanced colors inside and readable screen outdoors. Also, the S-LCD have a real 800x480 resolution
Had both side by side for a while.
They are absolutely equal in bright sunlight. That said, people suspect that some amoled screens come out of the factory better than others.
Blacks, contrast and bright colours are absolutely better on the amoled
Bright whites and overall colour balance is probably a bit better on S-LCD
Pixel smoothness and small text readability is a bit better on S-LCD. That said, after you have amoled for a while you will realize that unless you keep your nose touching the screen, your vision will process the amoled screen the same way as the S-LCD. Takes some time though.
Battery usage: we made -accurate- -measured- tests, of the battery drain in milliamperes/milliwatts. They came out very close, the main difference is obviously that amoled display is optimized for displaying dark stuff. Overall I think you save a bit of battery with amoled, but anyway the results were that:
- on low-medium brightness (inside) amoled is almost always better. If you are displaying all white screen, they are closer
- on medium brightness it depends on what you are displaying (light vs dark) but there is not a lot of difference, although amoled tends to save a bit more
- on high brightness (outside) amoled almost invariably drains more than S-LCD, except when the screen is very dark. When displaying almost completely white screens at max brightness, amoled loses big time compared to S-LCD, but that is the only situation where this big difference happens.
One last noticeable difference is colour temperature, but that also varies from handset to handset. Amoled tends to be a bit on the warm side (at least on mine) and S-LCD on cool. The old 'problem' of the pinkish tint is gone with the froyo update, those few displays still affected by it could be counted as defective.
Oh and by the way, here almost invariably if the box doesn't say 'amoled' you are getting a S-LCD screen. I have to admit I was very surprised at first by the quality of S-LCD and mistaken it for a differently calibrated amoled for some minutes. Blacks are good, but not close to amoled, if you go into a dark room you should notice
I'm sure similar questions have been asked already but I find myself in a fairly unique position whereby my old phone was SLCD and Three UK replaced it with an AMOLED Desire under warranty. I can now either keep this one or complain and get it replaced. Which would be the better option in this scenario?
Thanks
Sent from my HTC Desire using XDA App
Depends on you, AMOLEDS draw approx 3x more power when displaying white pixels, has a higher chance of getting a burn-in, but they use virtually no power when displaying black/ dark colours. SLCDs performs better under sunlight when compared to AMOLEDs, and they don't use Pentile matrix.
I would never do it... Images looks more beautiful on the AMOLED, believe me...
unnddd said:
I'm sure similar questionable have been asked already but I find myself in a fairly unique position whereby my old phone was SLCD and Three UK replaced it with an AMOLED Desire under warranty. I can now either keep this one or complain and get it replaced. Which would be the better option in this scenario?
Thanks
Sent from my HTC Desire using XDA App
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Since you live in the UK where there is not much bright sunlight, you may as well stick with the AMOLED.
Engadget recently did a comparison of the SLCD and AMOLED desires and the AMOLED one came out with the better battery life. If I had both in my hands I would just pick the one which has the most honest colours.
The colours aren't really of much concern. There seems to be a slight pinkish tint on the AMOLED but it really isn't that bad. Nor do I care about seeing it in sunlight (I live in the UK). The only thing that slightly bothers me is the fuzzy text, but since I don't have them both side by side I can't do a proper comparison. What do others think of the layout of the pixels on the AMOLED display as compared with the SLCD?
Sent from my HTC Desire using XDA App
Having held them both side by side today I would still pick the amoled, the low black levels make for am immense movie watching and e- reading experience ( white text on a black background is really restful foot the eyes to read) the only time text trading is a problem is the SMALLEST red text on a black screen, so hardly ever!
revthanki said:
Having held them both side by side today I would still pick the amoled, the low black levels make for am immense movie watching and e- reading experience ( white text on a black background is really restful foot the eyes to read) the only time text trading is a problem is the SMALLEST red text on a black screen, so hardly ever!
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Hmm... I guess I'll just go to a Three store tomorrow and compare for myself. I'm very picky about this sort of thing and I don't want to have a phone I'm not happy with for the next 1 1/2 years or so. In a way I could be considered lucky being able to pick, but I find it's usually more of a misfortune in my case.
Anyway, thanks for the help.
I have heard from few people that the screen although AMOLED, does not stay true black in dark areas, but have grey tint like LCDs do. How would you people using the device rate the screen and its contrast quality compared to industry standards like Samsung. Also, is the battery drain issue somehow connected to this pixels not turning off completely?
[email protected] said:
I have heard from few people that the screen although AMOLED, does not stay true black in dark areas, but has grey tint like LCDs do. How would you people using the device rate the screen and its contrast quality compared to industry standards like Samsung. Also, is the battery drain issue somehow connected to these pixels not turning off completely?
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LED is the same, no matter which brand makes it. there are Three Manufacturers of LED displays, like universal Display Corporation (UDC), SAMSUNG and LG.
But when some Phone brand advertises their display with the name of Super Amoled then it made by Samsung.
and if they say OLED then it made by LG.
and apple usually use display by UDC.
CONCLUSION Realme use Samsung sAMOLED, 94% display market share occupied by Samsung and numbers are keep growing.
[email protected] said:
I have heard from few people that the screen although AMOLED, does not stay true black in dark areas, but have grey tint like LCDs do. How would you people using the device rate the screen and its contrast quality compared to industry standards like Samsung. Also, is the battery drain issue somehow connected to this pixels not turning off completely?
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The amoled panel itself is same as samsung as its super amoled and manufactured by samsung.
But the problem is color os dark mode not panel.
Cos applies different shades of black in system wide dark mode, so it may appear grayish but its true black if you are watching movies, using apps with dark mode and on dark wallpapers.
And for me, there is no unusual battery drain.
Standby drain is 0.5-0.8%/hour which is really good.
It last 6 hours of gaming and on moderate usage i have got around 10 hours of sot.
But as we know enabling dark mode saves some amount of battery .But in case of color is dark mode as it is not total dark ,does is save too???
osamanazim said:
But as we know enabling dark mode saves some amount of battery .But in case of color is dark mode as it is not total dark ,does is save too???
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Tbh, none of dark mode saves significant battery, its not even proofed properly, its just commonly considered, even if it saves, it won't make much difference.
Personally tested, maybe it can add few more mins but can't make difference of a hour in sot.