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Discuss Utility to adjust display settings (contrast, gamma, etc) at the Free Toolchain Software (Cydia App's) - Hackint0sh.org; A much needed app for the iPhone is a utility that would allow adjustment of ...
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    Lightbulb Utility to adjust display settings (contrast, gamma, etc)

    A much needed app for the iPhone is a utility that would allow adjustment of the LCD display settings. There has been a wide variation in the visual qualities of the screens of iPhones produced up to this point.

    First, there are three different manufacturers of the LCD panels used in the iPhone, all with positive and negative aspects. The 5755136 panel tends to be brighter than other two displays but can sometimes look washed out. The 7455232 panel is darker but has higher contract--however recent batches have exhibited a "negative-black" issue that displays darker grays improperly. The newer 7451392 panel seems to be somewhere in between in terms of brightness, but displays a subtle interlaced effect (shimmering) and seems to have a wider range of possible color temperatures from blueish to reddish.

    Second, there are the natural variations in manufacturing and calibration within each LCD panel type. I have seen a great deal of variation in maximum brightness, contrast, sharpness and color temperature for each of the panel types listed above. Some iPhones have very dirty yellow or reddish whites while others are very blueish.

    I believe that many of these issues could be addressed with a utility that would allow for the adjustment and calibration of the LCD display settings, including contrast, gamma, and color temperatures and profiles.

    I wanted to see if such a utility would be technically possible for the iPhone at this time with the current knowledge of the display types and drivers.

    -Kavik



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    This is very interesting, is there a method to know what LCD screen (manufacturer) is used in a iPhone (software method, without open the iphone) ?

    Thank you

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    I have found, the LCD Panel Id is in the field test (dial *3001#12345#*).

    Mine is : 7459072
    Last edited by johnmph; 11-07-2007 at 11:14 AM.

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    I agree!! It's driving me crazy that after I upgraded my iPhone to 8GB from a 4GB, I compared them side by side and the color contrast LCD of the 4GB is so much better than my 8GB. And they are both the 7 series LCD, but apperently they are still different because they were calibrated during different times.

    I'm requesting for an app to adjust color contrast!!

 

 

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