Detect Retina Display?

Discussion in 'iPhone' started by Jigga, Jul 19, 2011.

  1. Jigga macrumors 6502

    Joined:
    Jun 11, 2009
    #1
    Odd and random question.
    I bought an iPhone 4 off Craigslist. Though it's performing great, I have this sense that the display might not be the Retina.
    The reasons being, whenever I've looked at an iPhone 4 with my polarized sunglasses on, the display wasn't clear. This screen is.
    Also, from the side, it's completely viewable.
    Is there a way to see if I actually have a retina display or if it might have been changed?

    Thanks for any help.
     
  2. Intell macrumors P6

    Intell

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    Jan 24, 2010
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    #2
    All iPhone 4's have a retina display. It cannot be changed out with a non-retina display.
     
  3. Jigga thread starter macrumors 6502

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    Jun 11, 2009
    #3
    No chance the seller's screen broke and had it replaced with a non-retina?
     
  4. Intell macrumors P6

    Intell

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    #4
    No, only the iPhone 4 screen fits and works in the iPhone 4.
     
  5. Jigga thread starter macrumors 6502

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    #5
    I hope you're right.
    Am I crazy?
     
  6. Intell macrumors P6

    Intell

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    #6
    I am right. Having seen both parts, there is no way they could fit together and work.
     
  7. Jigga thread starter macrumors 6502

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    Jun 11, 2009
    #7
    It just seems so odd to me, every iPhone 4 I've seen with my glasses on were distorted. Not mine.
     
  8. L I G H T I N G macrumors regular

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    Feb 16, 2011
    #8
    Can you post a picture of the screen so we can differentiate what kind of screen it is?
     
  9. boss.king macrumors 68040

    boss.king

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    Apr 8, 2009
    #9
    Is it possible it's an iPod touch screen? Meaning it doesn't have IPS?
     
  10. Intell macrumors P6

    Intell

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    #10
    An iPod Touch screen would not fit in an iPhone.
     
  11. boss.king macrumors 68040

    boss.king

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    Apr 8, 2009
    #11
    Ok. Then I think it's in your head OP
     
  12. Powermax macrumors regular

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    Aug 11, 2006
    #12
    To be sure, just make a screenshot, open that image on your computer and look at the resolution.
     
  13. boss.king macrumors 68040

    boss.king

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    #13
    You're joking right?
     
  14. wordoflife macrumors 604

    wordoflife

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    Jul 6, 2009
    #14
    I thought it was a good idea too.
     
  15. awadeee macrumors 68020

    awadeee

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    #15
    I think what the OP is trying to ask is if the original LCD assembly broke and the seller replaced it with one of lesser quality, perhaps bought somewhere in the Chinese market.
     
  16. boss.king macrumors 68040

    boss.king

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    #16
    I'm pretty sure it would just give 960x640 screenshot. Although now thinking about it I may be wrong. Apologies if I am.
     
  17. wordoflife macrumors 604

    wordoflife

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    #17
    You might be right. Te iPhone might think that it's displaying 960x640 when it really isn't.

    No idea.
     
  18. Intell macrumors P6

    Intell

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    #18
    If that's the case, then part of the right and bottom of the screen would be missing. I tricked my 3Gs into thinking it had a retina display and all I got was the top right corner.
     
  19. bob616 macrumors 6502

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    Jul 12, 2008
    #19
    The iPhone 4's screen is polarized vertically, so if you look at it with polarized glasses while it is in the vertical position (portrait mode) then it will appear to have rainbow colors across the screen. This is completely normal, their is nothing to worry about.
     
  20. mtnDewFTW macrumors 6502a

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    Oct 26, 2009
    Location:
    San Francisco, CA
    #20
    Unless the person you bought it from somehow figured out a way to fit a non-retina display screen in the iPhone 4, and then found a manufacturer to make it, and put it in that iPhone just to screw you, I think it's just your imagination playing with you :)
     
  21. The Californian macrumors 68040

    The Californian

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    #21
    Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_3 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8J2 Safari/6533.18.5)

    Place it next to an iPhone 3G or 3GS. If you don't look at your screen a go "wow, that's a huge difference" it's not a retina display.
     
  22. JetBlack7 macrumors 68020

    JetBlack7

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    #22
    Which means it's not an iPhone 4.
     
  23. DouchGod macrumors regular

    DouchGod

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    Aug 23, 2010
  24. PNutts macrumors 601

    PNutts

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    Jul 24, 2008
    Location:
    Pacific Northwest, US
    #24
    I haven't heard of any iPhone screen being polarized. I grabbed my polarized sunglasses and looked at my iPhone 4. I thought I could see a tiny difference at 45 degrees off vertical, but it's probably my imagination or an interesting side affect of my screen protector. My understanding of polarization is that if they are both polarized the light passed would be dramatically affected. I think old-school LED screens were polarized to enhance the display and turning them sideways would produce an "is this thing on?" moment.
     

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