1. mirbg's Avatar
    Hello, guys!

    How many of your phones suffer from this problem? Do you see your screen flickering on the picture bellow? What's the first two digits of your S/N?
    Mine is F17 and flickers...

    04-09-2016 05:31 AM
  2. libra89's Avatar
    Screen didn't flicker here
    04-09-2016 08:16 PM
  3. LCW's Avatar
    No flickering
    04-09-2016 11:44 PM
  4. auditman's Avatar
    Same here but im on 5s
    04-10-2016 04:26 AM
  5. mirbg's Avatar
    Screen didn't flicker here
    Did you open the image in full screen?
    04-10-2016 08:55 AM
  6. libra89's Avatar
    Did you open the image in full screen?
    Yes I did and no difference.
    04-10-2016 09:27 AM
  7. mirbg's Avatar
    Yes I did and no difference.
    Could you share the first two digits of your phone's S/N?
    04-10-2016 12:19 PM
  8. Sherry_B's Avatar
    Could you share the first two digits of your phone's S/N?
    Why do you need that?
    libra89 likes this.
    04-10-2016 12:41 PM
  9. mirbg's Avatar
    Because some of the batches are known for this particular problems - F17 for instance. Other like C39, DN are coming with better displays.
    04-10-2016 12:58 PM
  10. libra89's Avatar
    It doesn't start with an F, it starts with the letter C.
    04-10-2016 12:58 PM
  11. Sherry_B's Avatar
    Because some of the batches are known for this particular problems
    Can you share a link to an official article about this? I could find none.

    F17 for instance. Other like C39, DN are coming with better displays.
    Probably better to post that info rather than asking people for serial numbers, even if you're not asking for the entire number. Some may not feel comfortable in giving the numbers, even if it's not the entire number.
    04-10-2016 01:06 PM
  12. dictoresno's Avatar
    the first couple letters/numbers denote the factory it was made in and the date of manufacture. nothing to worry about, as many other have the same start. i think its only the last like 6 that are the actual device serial number.

    for example, F1 denotes the factory China, Zhengzhou - Foxconn
    libra89 likes this.
    04-13-2016 10:32 PM
  13. Android Does's Avatar
    the first couple letters/numbers denote the factory it was made in and the date of manufacture. nothing to worry about, as many other have the same start. i think its only the last like 6 that are the actual device serial number.

    for example, F1 denotes the factory China, Zhengzhou - Foxconn
    Hello, I've just picked up an iPhone SE and the box says it's an F17 batch.. I haven't opened it yet and I am wondering if I should just return it and see if I can get a hold of a CX or DNX serial number one.. I've had this issue with every 4 inch device from Apple I've bought including the iPhone 5, 5s and 5c, I had the 5s swapped out and I ended up with a perfect unit, the iPhone 5's screen was also replaced under warranty and didn't have the same issue.

    Currently I am using a 5c which I purchased new on Amazon, and it has the interlacing issue. It is called Pixel Walk. I am in the process of returning this 5c as well, and I'm shocked that this issue hasn't been acknowledged by Apple yet. The suppliers for these screens are not all equal. I will be playing iPhone hardware lottery some more it seems, wish me luck...
    04-18-2016 02:06 PM
  14. lui22's Avatar
    I actually recorded a video of this effect. I compared it to my 6S plus. You can see the effect going away as you zoom in on the photo. Its a little difficult to record becaus the flickering appears to happen a roughly the same speed as 30fps so i recorded it in 60 which helps a little


    04-19-2016 10:53 PM
  15. libra89's Avatar
    I see what you mean now, that doesn't happen with my SE. That's strange though
    04-19-2016 11:44 PM
  16. AdamHunterATC's Avatar
    I only see a "flicker" if I'm zooming in and out on it. Is that what you mean? If the image is just static on the screen, there is no flicker.
    04-23-2016 08:20 PM
  17. AdamHunterATC's Avatar
    I only see a "flicker" if I'm zooming in and out on it. Is that what you mean? If the image is just static on the screen, there is no flicker.
    SN starts with C39 too, if that matters.
    04-23-2016 08:21 PM
  18. Aspiring PluserUser's Avatar
    I have returned 10 iPhones before due to the interlacing scan lines issue. It is annoying and I believe a true defect. Why? Because it's not retina when you see all kinds of lines, especially in pictures. The 6s plus is the only phone that doesn't have them. It does not seem like a coincidence that all of them had a C serial # that I saw.

    For the iPhone 5s the problem is global as I have noticed the exact same issue in different countries. I too independently came to the same conclusion that you did. The C serial #s are the best of the screens, for whatever reason. In more than one country I have taken a peak at the serial #s and seen the interlacing on the units with F (worst offenders and I've never seen one unit without it) D's also have it but far less. The C's are more or less OK with me. I'm glad I'm not nuts.

    I have only seen iPhone SE with F serial #s here unfortunately. Never seen a C. And we do not have good return policies here, and ordering direct from Apple requires at least a month before you get your money back, and you have to take your phone to a 3rd party shipper, fill out paperwork, etc. It's not worth it.

    Why there is no recall is beyond me. I want to buy an iPhone but I can't. Not when phones costing literally 1/4 the price have a 1080p screen that has zero interlacing. It only seems fair that if Apple is going to build a superior phone, the screen should not have interlacing lines.

    If you guys get some grass roots thing to get these screens replaced (most genius people think you're nuts or it's just within spec) or better yet fixed the issue so there is no lottery, then let me know. Otherwise I'm done with the iPhone as this issue is big enough for me to jump ship. I can't enjoy my screen unless I'm reading black and white text.
    06-10-2016 10:49 AM
  19. sangs's Avatar
    Have an F17 and no flicker here.
    06-10-2016 03:57 PM
  20. Furt's Avatar
    F18 with no flickering issues.
    06-10-2016 06:35 PM
  21. LeightonLaVell's Avatar
    F17 here, it is intermittent but very noticeable. Managed to get a picture showing the effect.

    Click image for larger version. 

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ID:	110198
    08-08-2016 04:39 PM
  22. anony_mouse's Avatar
    This is actually quite an interesting issue. I think I noticed it on a friend's iPhone 5S although it might have been some other phone.
    I wonder if it's caused by some strange form of temporal dithering (https://en.wikipedia.org/wiki/Frame_rate_control, https://en.wikipedia.org/wiki/Dither), where white noise is added not per pixel but in some way that's not uncorrelated, e.g. per line. This could cause odd patterns on the screen.

    BTW, I don't believe it's "interlacing", which is a technique where a frame is made up of two fields of "interlaced" scan lines captured at twice the frame rate.
    Last edited by anony_mouse; 09-14-2016 at 08:35 AM.
    09-13-2016 09:49 AM
  23. MelCali82's Avatar
    Mine is F17 and flickers if I leave the pic alone. Once I zoom in a little it stops.

    Not really worried since it only happens with that pic. Is this supposed to happen sometimes even without this pic test? If it only happens with this pic I'm not worried about it.
    09-14-2016 08:01 AM
  24. MelCali82's Avatar
    F17 here, it is intermittent but very noticeable. Managed to get a picture showing the effect.

    Click image for larger version. 

Name:	IMG_0142.JPG 
Views:	26 
Size:	977.9 KB 
ID:	110198

    So that happens randomly? My screen seemed to flicker only when viewing the attached pic in op
    09-14-2016 08:03 AM

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