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SAMOLED+ Pixel Response Time and Touch Screen Discussion & My Review of These Parts.

Discussion in 'Android Devices' started by Cyph3r, May 17, 2011.


Do you notice any of these issues?

  1. I notice the slow pixel response time.

  2. I notice the cold colour temperature.

  3. I notice the low touch sensitivity.

  4. I notice none of the above.

  5. I notice all of the above.

  1. Cyph3r

    Cyph3r Newbie
    Thread Starter

    Hey all, I wanted to start a thread to have a discussion about these two things that are my only disappointments in this phone.

    Let me start by saying I think this phone is awesome, and yes I feel there are a few other faults on the phone (lockscreen delay when running off the battery due to the CPU taking a second to kick in, weak GPS/wifi signal sometimes, heavy banding on gradients etc) But those are software issues and I know in the near future Samsung/Devs will sort this out.

    But I had some big complaints that aren't (still I hope not) software issues. Firstly;

    - Response Time.

    By this I mean when you buy a new monitor and the response time is listed as 4ms or whatever. This is the time the pixel takes to make a full change. A slow response time will cause ghosting. And that's exactly a issue that the Samsung Galaxy SII faces. Ghosting.

    I've gone through 4 replacement SII's for various reasons, and on all of them they ghosted. So it's not just my phone. Samsung bizarrely states the response time is 0.001ms which would be there would be no ghosting at all. However there is, quite a bit actually, by my testing the screen is actually around 6-8ms.

    I want to see if anyone else notices it. I know there's been a couple of threads on this but I want to see if the majority of people notice this. Here's how to test, go onto white page with black text on, and then scroll down the page at a moderate pace, not to fast not too slow, try it at different speeds as well just in case you don't get it right.

    The easiest way I find to do this is use the inbuilt stock news app, load up any story and it'll give you a long white page with black text you can scroll through. As you may notice if you got a decent set of eyes on you, the text will leave a trail. Also known as ghosting. To me, I find this absolutely unacceptable on such high end device.

    - Colour

    Also, as it's been widely reported and has been noticeable on all my GSII's, the colour temperature is very 'cool', nowhere near the perfect 6500k. As a result, white's look very blue. This is fine and you hardly notice it on it's own, however when I'm using the device at my PC, which I use on a 32" IPS panel TV I professionally calibrated, the whites on the GSII look more blue than the ocean! Technically this is a software problem and can easily be sorted when custom roms come along but jeez, this is some bad stock colour calibration.

    Also when you tilt the display, the viewing angles are generally very good, however tilting the display by pretty much any angle adds an extra blue tint to the screen on an already blueish screen.

    I'm an absolutely screen quality perfectionist so these points really get to me. Especially considering this is such a high end device.

    Overall I'd give the display a 6.5/10.
    After the colour temperature has been sorted, I'll give it a 7.5/10.
    If the ghosting can get minimized somehow even slightly through software on top of that, I'd give it an 8.5/10.


    - Touch Screen

    Now we all know about the movement deadzone/threshold on the touch screen which is massively annoying, but hopefully that'll get fixed in the near future. But What I'm going to complain about is the low sensitivity of the touch screen is the best way I can describe it.

    On my HTC Desire, I can tap the screen ridiculously lightly and quick, and the device will register the input, absolutely no questions asked. Absolutely brilliant.

    However on the GSII the sensitivity seems to be a lot lower, I can tap the screen lightly and quickly and the screen won't register the touch at all. This is pretty damn annoying as sometimes I just tap the screen lightly normally and I have to retap things. Not very often but still. I wish the device was as sensitive as the HTC Desire.

    In it's current state I'd give the touch screen an 8/10.
    If the movement deadzone and sensitivity got fixed, it'd be a 10/10.

    Now I'm sure I had more to write about but I've forgotten now. I'll edit it into the post if I can think of the other things.

    Now as I said, I think the GSII is a smashing phone, sure there are a lot of niggles at the minute, but I know they'll get sorted soon. Just the points I've outlined in this thread are things I'm scared won't get sorted. But you never know, I'm really hoping they can get sorted/do get sorted.

    As I said I've had 4 Galaxy S2's all had the above issues, and I've used 2 other S2's from friends who also have these issues, so it's widespread, I'm just curious if people actually notice it.

    I've added a poll to the thread regarding these issues. Please don't lie to yourself about this stuff, if you notice it, please answer honestly :)

    EarlyMon likes this.

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  2. vengance007

    vengance007 Well-Known Member

    Can i just say this is well written and detailed :) I shouldnt be here as i dont own GS2... yet :p. im thinking on selling my desire HD and add on the rest, i want my GS2 sim free :cool:. is it worth gettig the GS2 with all these problems?? or should i wait for say.... the nexus 3 by the end of this year,... rumoured to b quad core.... rumoured that is :p.
  3. xmjox

    xmjox Well-Known Member

    For me, that would depend on how bothered you are by these things, and whether or not you even notice them!

    Personally, and I have only had my phone 2 days, out of all the issues mentioned in the thread, I have only noticed the touch screen not being that sensitive. It hasn't affected me greatly though and I'm not regretting my decision to get the phone based on that.

    Also, rumours can be dangerous things! And the end of this year is aaaages away! :p
  4. I don't have a SGS2 yet but I can comment on a few of the things you have issues with. The blue tint on SuperAMOLED screens is a known quirk. Is prevalent on both the original SGS1 and the Wave. They put more blue in because blue pixels seem to have a shorter lifespan. It's not a dealbreaker for most people since even LCDs have yellow tint so they are just trading in a new color. If you increase the brightness, it becomes less blue. A bigger question is why is a screen perfectionist worried about calibration and colors even flirting with an SGS2 in the first place? All the reviews out there for SuperAMOLED state how blown out and inaccurate the colors are. Things are clipped and crushed for the sake of high contrast and wow factor. If screen accurateness was on top of your priority list, you should have picked something like the Optimus Black which has very white whites. Seems silly to trade it in so many times for something that is intrinsic to the technology.

    Never heard or seen ghosting on an OLED.

    Also, I've read dozens of reviews on this device and have used Samsung touchscreens and most people agree they are excellent. I can be as critical as the next guy, especially for a phone I am paying zounds of money for, but knowing that you've been through more than a handful of them already with the same issues (as well as your friends') makes me more than a little suspicious of these "issues".
  5. Cyph3r

    Cyph3r Newbie
    Thread Starter

    My replacements weren't due to these 'issues' they were for other reasons. And I know that these are quirks of the technology.

    The reason I got the GSII was because its the best phone out atm, and I CAN live with these problems, just they get to me.

    Mainly the ghosting, 6-8ms is the response time of this display, and my god does it annoy me haha.
  6. Lord Melbury

    Lord Melbury Newbie

    I really welcome criticism and knowing in great detail of any shortfalls of devices, but most people may think your being punctilious.

    Regarding screen responce time as I am not playing games that require high FPS or latency correction I cant see this as a problem, It is after all a portable device.

    I can not believe my GS2 plays full mp4/avi/mkv 1080p vids (smooth), so when the miniusb to HDMI lead lead goes on sale I can test it with my my 32" Samsung LED TV, Perhaps then I will see the full extent of what you are saying.:eek:

Samsung Galaxy S2 Forum

The Samsung Galaxy S2 release date was April 2011. Features and Specs include a 4.3" inch screen, 8MP camera, 1GB RAM, Exynos 4210 Dual processor, and 1650mAh battery.

April 2011
Release Date

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