[Q] Pixel Density SkyRocket and Infuse are different - AT&T Samsung Galaxy S II Skyrocket SGH-I727

Hi,
I have a Samsung SkyRocket and Infuse both are set at a HDPI of 240.The Infuse has a DPI (dot per inch) width of 234.46153
and DPI height of 236,27907. The SkyRocket has a DPI width of 160.42105 and DPI height of 160.0.
Since both phones are set at a HDPI of 240 I am assuming that the Infuse has a better screen than the Skyrocket? I thought they were suppose to be the same screen? Why are the dot density different?
Looking at both phones, the Infuse has much sharper and illuminated fonts.
Thank you for any useful information in advance,
Giovanni

DPI is length (in X or Y direction) / amount of dots (pixels - for ppi).
If both screens have the same size and same proportion (which means equal X and Y sizes) - it means both screens have the same actual DPI.
That is, unless one of the screens is Pentile and the other isn't - which is not the case here.
You can see in specs that both screens are approx. 207ppi (pixels per inch). This is physical measurement, HW.
Whatever is set in SW - can be changed.

Hi Jack,
Thank you for your response. What you say makes a lot of sense.
Would you happen to know? Why is it that Pixel Density (dots per inch) is much lower on the SkyRocket after a factory reset? The app that I'm using is Screen&System and is showing a DPI width of 160.42105 and DPI height of 160.0. for the SkyRocket. Is there anyway
to change that and make it the same as the Infuse's width of 234.46153 and DPI height of 236,27907? Both phone's
are set at a HDPI of 240 already.
Thank you for your help!
Giovanni
Jack_R1 said:
DPI is length (in X or Y direction) / amount of dots (pixels - for ppi).
If both screens have the same size and same proportion (which means equal X and Y sizes) - it means both screens have the same actual DPI.
That is, unless one of the screens is Pentile and the other isn't - which is not the case here.
You can see in specs that both screens are approx. 207ppi (pixels per inch). This is physical measurement, HW.
Whatever is set in SW - can be changed.
Click to expand...
Click to collapse

Since the app can't physically measure a screen, you'll need to know where the measurement comes from to see why it's shown as it is. Maybe it's another setting in build.prop, maybe something else.

Thank you for your response. Would you happen to know? Is there an app out there where I can verify where the measurement is coming from? I think I may have a defective screen with my Samsung SkyRocket
Thank you as your responses are much appreciated.
Jack_R1 said:
Since the app can't physically measure a screen, you'll need to know where the measurement comes from to see why it's shown as it is. Maybe it's another setting in build.prop, maybe something else.
Click to expand...
Click to collapse

Related

What IS the wallpaper size on the Galaxy S?

I have seen many different reports. The one I roll with 980x800. Others give other responses, but 980x800 seems to be the closest, but there is STILL room on setting the wallpaper. Like a tiny centimeter on either side when you do it.
So, for once and for all, is it 980x800?
thehyecircus said:
I have seen many different reports. The one I roll with 980x800. Others give other responses, but 980x800 seems to be the closest, but there is STILL room on setting the wallpaper. Like a tiny centimeter on either side when you do it.
So, for once and for all, is it 980x800?
Click to expand...
Click to collapse
If I remember correctly, the screen's resolution is 400x800, so something along that ratio should work. It needs to be the same LxW ratio as the screen for the box tio fit over it, the actual resolution size shouldn't really matter as long as it's within reason and has the same ratio.
Herp derp Captivate XDA app.
haha
it haz walpapers? epic
960x800
10char
pizz0wn3d said:
If I remember correctly, the screen's resolution is 400x800, so something along that ratio should work. It needs to be the same LxW ratio as the screen for the box tio fit over it, the actual resolution size shouldn't really matter as long as it's within reason and has the same ratio.
Herp derp Captivate XDA app.
Click to expand...
Click to collapse
The only problem with looking at the screens resolution is that most roms/launchers use wallpaper that stretches across all the home screens, and you scroll across it as you switch screens.... So to avoid stretching the image you need something wider... Hence the need for images with dimensions like 960 x 800.
If you are just using one screen (or have an app for a different wallpaper per screen) then you're looking for 800x480 (or as you said, the same ratio)
Sent from my SAMSUNG-SGH-I897 using XDA App
960x800, as it always has been

htc sensaation resolution

i just checked my htc sensation roted resouktation and it shows that my screen 240ppi rather then what it states on htc phone
Display Type S-LCD capacitive touchscreen, 16M colors
Size 540 x 960 pixels, 4.3 inches (~256 ppi pixel density)
source from http://www.gsmarena.com/htc_sensation-3875.php
and a screen shot of showing that it is running 540*960 at 240 ppi rather then 256
i need to know if this is only happening to me or your phone have the same ppi
please reply to me anyone
beside i just wanna know i'm not really worried about the ppi thing but i want to know if this is only happening to me or other people have the same thing.
i'm using lcd resolution app from market its free and only require root.
my phone is set at the same 240 ppi
staymunch said:
my phone is set at the same 240 ppi
Click to expand...
Click to collapse
i wonder why they had to lie about the ppi thing.
HTC have not listed the dpi on this phone as 256.... GSM arena can say what ever spec they want but it doesnt mean it true. The optimum dpi for that display when its sold may be 256 or may not but either way all HTC roms are set as 240..
all that prog does is change the entry in the build prop file
anarchyuk said:
HTC have not listed the dpi on this phone as 256.... GSM arena can say what ever spec they want but it doesnt mean it true. The optimum dpi for that display when its sold may be 256 or may not but either way all HTC roms are set as 240..
all that prog does is change the entry in the build prop file
Click to expand...
Click to collapse
in the software you can actually change the resolution but i thought lets just stick with 240 thing.
The software is telling you dpi, not ppi. A dot can consists of more than 1 pixel, and if you set the dpi so that each pixel contains more than 1 dot... it can look weird.
Changing the dpi setting can increase/decrease the font and various graphics on screen. That's why many of the 5- or 7-inch tablets, although only have WVGA resolution, display more stuff on screen than many of the WVGA phones. They simply scale up the dpi setting. Of course setting it too high on a low ppi screen will make everything looks crappy.

Skyrocket DPI

What do you think is the reason that Samsung puts such a beautiful high res screen in the SGSII (Skyrocket of course) then sets the DPI to 240?
Coming from my Atrix, everything looks HUGE and not just because the screen is bigger.
I have installed a utility that I can use to change the DPI to 180, which I like much better. Some apps don't like it, like the phone app doesn't size appropriately etc.
I'm just curious as to why they limit screen real estate like that?
I actually like the big icons. Easier to see looks lezs cluterd. Mabye the thougt most people would prefer it that way. Bigger is better. I wish we had a 5.5 inch display
if the icons were any smaller they would look blurry and underscaled on the SR, cause your Atrix i believe had a qHD 960x540 screen and the SR has a 800x480 which has a lower dpi and keep in mind the icon PNGs are 72x72 and they are displayed as 72 pixels wide on both of the devices, and the Atrix is 60 pixels wider and 160 pixels taller so icons are going to appear smaller than they do on the SR cause of the extra screen real estate

Stupid iOS fan boys are inventing things to trash Android again

Read a post today regarding why Android phones are so much bigger than the iPhone and it makes my blood boiled:
http://www.displayblog.com/2012/01/16/why-android-smartphones-are-bigger-than-the-iphone/
If he was true, I wouldn't complain. But that guy totally made things up by himself. It's clear that he had not done research to back up his "theory" -- he just made it up himself. Any Android users who had changed the LCD density of their devices would know that it's fairly easy to change the lppi. When a manufacturer increase the physical resolution of its device, it will adjust the LCD density to accommodate the denser display. That guy could find out the truth easily by asking around.
The article makes perfect sense to me. I for one would much rather have a smaller screen with higher pixel density.
does it really matter. you have a device and it works for you, if you read every post where somebody whines about the most trivial things then i feel sorry for you. get a life
I think I'll try to rebut this.
There are four DPI levels (MDPI is baseline):
LDPI: ~120DPI
MDPI: ~160DPI
HDPI: ~240DPI
XHDPI: ~320DPI
What this means is that when resolution increases from ~120 ppi (I prefer ppi when discussing pixel-based digital displays) to ~159 ppi fonts and icons will get smaller. This applies to all three levels of in-betweens. And displays north of ~320 ppi will continue to get smaller with no reprieve.
Click to expand...
Click to collapse
True. But manufacturers do not create screen sizes of EVERY possible density. They tend to aim for a certain density. And I don't see why they won't round up 159ppi up to 160. They wouldn't (with minor exceptions) create a screen perfectly at the middle between HDPI and MDPI, for example.
If displays size were kept at 3.2 inches from the G1, the corresponding resolutions (ppi) would be:
G1: 180.23
Nexus One: 291.55
Nexus S: 233.24
Galaxy Nexus: 458.94
Click to expand...
Click to collapse
Why would you want to convert the screen sizes to 3.2 inches first? This doesn't make sense! Oh, and I think you calculated the Nexus S wrongly.
But because Android renders text and graphics like desktop OSes (e.g. Windows, OS X) increasing resolution above 320 ppi means smaller UI elements. The display had to grow in size to compensate for shrinking UI elements. iOS renders the Retina display not by shrinking UI elements by one fourth but by doubling clarity and sharpness. Unless Google adds an additional “DPI level” beyond XHDPI, Android smartphones that match or beat the iPhone 4/4S in resolution will always be bigger, much bigger.
Click to expand...
Click to collapse
Android would never need to go past 320dpi, just like the iPhone, for it is at the verge of the human eye's visual acuity.
FYI for those who don't know, 4 copies of the UI elements are created, for each of the different display densities. So scaling up would simply mean swapping the element with the identical one of the higher density. Anything past the highest density is also past 320dpi, higher than the limit the human eye can distinguish.
UI elements created for XHDPI are usually purposefully created such that they are big enough for the density, allowing UI elements to be comfortably big enough for users.
Then why are 1280×720 Android smartphones much bigger? Because UI elements would get too small if they were much smaller than 4.5 inches.
Click to expand...
Click to collapse
There is no point of having a screen higher than 320dpi. It would be hard for one to differentiate a screen of 320dpi and 360dpi of the same size. There is no point in google trying to compete in resolution with the iPhone at this point. And besides, a manufacturer could easily release a 3.5 inch phone matching the iPhone's screen perfectly with no problems.
So there is seriously no practical point in trying to squeeze 1280x720 into a small 3.5 inch screen. I doubt manufacturers will want to try that when a 320ppi screen could do the exact same job (which by calculations, a 960x640 screen fits perfectly), without users noticing any difference. This is when resolution does not mean everything. DPI is much more important than resolution.
Disclaimer: I am not an app developer, but this is what I understand from the documentation from the android developer website.
DirkGently said:
The article makes perfect sense to me. I for one would much rather have a smaller screen with higher pixel density.
Click to expand...
Click to collapse
If what he said was true, then it made perfect sense. The problem is, he's wrong, completely. An OEM will change the ro.sf.lcd_density in build.prop to adjust the LCD density so that the font size and icon size scale up as the physical resolution increase, period. That's a fact and I have not seen a single OEM who doesn't do that. In fact, if an end user roots his device, he can change the setting himself.
No offensive to the iOS fans, but I just couldn't stand for some of them who think they know everything and keep inventing new things to praise how great their OS is, when they couldn't even get the fact right. I mean, if he's saying a 3.5" screen is the perfect size, that's one thing because it's personal preference and no one can argue that. But he wasn't doing that. He just made up a theory that is just plain wrong and present it as a fact.

[Q] Can the resolution of this phone be changed?

Hello! Was wondering if there was a way to change the resolution of the S6 from QHD down to 1080p. I've found the Nomone Resolution Changer, but I was wondering if there was a more trustworthy way about getting the resolution to get to 1080p. Long shot, but still! Recommendations, please?
Tythas said:
Hello! Was wondering if there was a way to change the resolution of the S6 from QHD down to 1080p. I've found the Nomone Resolution Changer, but I was wondering if there was a more trustworthy way about getting the resolution to get to 1080p. Long shot, but still! Recommendations, please?
Click to expand...
Click to collapse
Mind if I ask why?
entropism said:
Mind if I ask why?
Click to expand...
Click to collapse
Actually I was wondering the same thing until I remembered the fact it has a small battery and a 5.1" screen that really doesn't need the QHD resolution with such a small battery + screen
There are some apps available to change the DPI, i know that skydragon roms come pre baked with a DPI changer, but this will require root.
Stevles said:
Actually I was wondering the same thing until I remembered the fact it has a small battery and a 5.1" screen that really doesn't need the QHD resolution with such a small battery + screen
Click to expand...
Click to collapse
But that's not how it works. The phone will still have the same qHD screen, and will still have the same amount of pixels, and require the same amount of power. You're basically just changing the DPI to make everything larger, using 4 pixels to display what 1 used to.
entropism said:
But that's not how it works. The phone will still have the same qHD screen, and will still have the same amount of pixels, and require the same amount of power. You're basically just changing the DPI to make everything larger, using 4 pixels to display what 1 used to.
Click to expand...
Click to collapse
No he actually wants to change the proper resolution, not DPI.
Less resolution = Less processing power required = Less battery spent.
That being said.. OP no there isn't a way
Stevles said:
No he actually wants to change the proper resolution, not DPI.
Less resolution = Less processing power required = Less battery spent.
That being said.. OP no there isn't a way
Click to expand...
Click to collapse
Right, that's what I meant. You can't change the DPI (which would what he'd be doing) and have it magically change the physical number of pixels used.
No that's not what he's asking. He's asking this much like a TV. Instead of having it be QHD he wants it to display in 1080.
It's a clever way of thinking but that wouldn't help really. It'll still have the super pretty screen just everything would be smaller. Even if there was a way
nolimit78 said:
No that's not what he's asking. He's asking this much like a TV. Instead of having it be QHD he wants it to display in 1080.
It's a clever way of thinking but that wouldn't help really. It'll still have the super pretty screen just everything would be smaller. Even if there was a way
Click to expand...
Click to collapse
But that's the point: Even if you wanted to display in 1080, you still have the same amount of physical pixels in the screen, and the same amount of power needed to light them up. Unless, of course, you wanted to only use 1920x1080 pixels, at which point only 25% of the display would actually be lit up.
entropism said:
But that's the point: Even if you wanted to display in 1080, you still have the same amount of physical pixels in the screen, and the same amount of power needed to light them up. Unless, of course, you wanted to only use 1920x1080 pixels, at which point only 25% of the display would actually be lit up.
Click to expand...
Click to collapse
You're missing the point.
First of all, lowering the resolution would make everything appear larger. You have to lower the DPI setting in build.prop to scale things back down to the same size (or lower).
Secondly, lowering the output resolution will save battery power and increase performance because the CPU and GPU are working less. This is fact and just how computers work (the screen is not the only power draw in a phone). The amount of physical pixels in the screen is irrelevant because that will draw the same amount of power regardless of what the resolution is. (However, since the is an AMOLED screen, it will draw less power when displaying blacks due to the nature of the technology. Not that this has anything to do with the resolution discussion.)
Thirdly, the amount of power you will be saying varies. Mostly you will gain performance and power-savings while playing 3D (rendered) games. The GPU will be able to perform at a higher framerate as well as save you power. This is tested and true, although some applications will be glitchy due to poor coding. The amount of savings while on normal screens is subject to the efficiency of the SoC. I am not sire much will be gained here. Performance in these screens is said to be slightly increased, although I believe this phone probably has snappy speeds already.
Lastly, if you do this there may be a visual issue that could get on your nerves. Since you are altering the 1:1 resolution of the pixels, a blur will naturally occur. Since the screen is relatively small for the amount of pixels in it, the blur will be minimal and you will hardly notice after your eyes adjust to it.
Using Resolution Changer Pro (free app) you can set res to 1080 and dpi to 480 for a significant improvement in gaming performance. (phone doesnt heat up like frying pan anymore)
Difference in quality is completely unboticable.
Thoth33 said:
Using Resolution Changer Pro (free app) you can set res to 1080 and dpi to 480 for a significant improvement in gaming performance. (phone doesnt heat up like frying pan anymore)
Difference in quality is completely unboticable.
Click to expand...
Click to collapse
Yes after resolution changed, everything go smoother
Thoth33 said:
Using Resolution Changer Pro (free app) you can set res to 1080 and dpi to 480 for a significant improvement in gaming performance. (phone doesnt heat up like frying pan anymore)
Difference in quality is completely unboticable.
Click to expand...
Click to collapse
Hello Thoth33,
I used Resolution Changer Pro, but it didn't change the resolution!
What do I do wrong? I use Android 6.0 beta on my Galaxy S6 (SM-G920F).
It even tells me that it gets root access!
Help The Peace said:
Hello Thoth33,
I used Resolution Changer Pro, but it didn't change the resolution!
What do I do wrong? I use Android 6.0 beta on my Galaxy S6 (SM-G920F).
It even tells me that it gets root access!
Click to expand...
Click to collapse
It is required ROOT
jojoejit said:
It is required ROOT
Click to expand...
Click to collapse
I HAVE root...
Help The Peace said:
I HAVE root...
Click to expand...
Click to collapse
Resolution Changer Pro
From the description:
####### THIS APP REQUIRES ROOT AND 4.0+ #######
####### TouchWIZ launcher will behave oddly -- install an alternate launcher BEFORE trying this #######
####### Android versions LOWER than 4.2 may not fill the whole screen. #######
Theodric58 said:
Resolution Changer Pro
From the description:
####### THIS APP REQUIRES ROOT AND 4.0+ #######
####### TouchWIZ launcher will behave oddly -- install an alternate launcher BEFORE trying this #######
####### Android versions LOWER than 4.2 may not fill the whole screen. #######
Click to expand...
Click to collapse
Solved the problem via Android Terminal Emulator!!
i changed the resolution on my Galaxy S6 Active from QHD to just HD!! Did some graphics benchmarks and the results are more than 2 times those of QHD.
Oh, and I did this without ROOT.
Xa33M said:
i changed the resolution on my Galaxy S6 Active from QHD to just HD!! Did some graphics benchmarks and the results are more than 2 times those of QHD.
Oh, and I did this without ROOT.
Click to expand...
Click to collapse
How to do it without root?
MobileTechArena said:
How to do it without root?
Click to expand...
Click to collapse
You can do it via adb.
These are the 2 commands for both screen resolution and dpi
adb shell wm density (insert dpi here)
adb shell wm size (insert resolution here) && adb reboot
The reason for using both commands is that you have to use the correct dpi with your desired resolution and screen size, so that the icons and UI is neither too large nor too small, otherwise, the UI will crash
For example,
For Galaxy S6,
If you want 1080p, you have to choose 480 dpi as that is the correct dpi for a 5.1 Inch diaplay.
If you want to go back to QHD, just repeat the same commands with your stock dpi and resolution, which are
640 dpi
1440x2560 resolution && adb reboot
I did it via adb because currently there is no root for the S6 Active.

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