How to rectify discrepancy in tactile input on Android screen because of water drop falling on the screen?

Dr.Sunil Vaswani September 6, 2012
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How to rectify discrepancy in tactile input on Android screen because of water drop falling on the screen?

  1. ha14
    September 6, 2012 at 7:03 pm

    perhaps to recalibrate the screen of Micromax A75 "you can enter into engineering mode by dialing *#*#3646633#*#*"
    http://androidforums.com/a75-all-things-root/523663-beta-rom-ub-a75-2-a-2.html
    look if there is something regarding screen???

    • Dr.Sunil Vaswani
      September 7, 2012 at 7:13 pm

      Calibrate screen option is not in display settings

      Phone on resuming did begin in testing mode ,
      The screen calibration option not seen

      Maybe option of phone lock was seen

  2. Richard
    September 6, 2012 at 3:49 pm

    Many devices offer the user the option for adjusting the sensitivity of the screen. If your device offers this option (usually under a settings command) try making the screen less sensitive. Your finger will provide the "stronger" touch or signal to the screen of your device than a drop of water.
    Good luck! :)

    • Dr.Sunil Vaswani
      September 7, 2012 at 7:02 pm

      You mean making screen resistive from capacitative

      • Kannon Y
        September 8, 2012 at 7:13 am

        "resistive" and "capacitive" screens are fundamentally different, although related, technologies.

        A resistive screen is so-named because of it requires pressure from the user to activate its touch screen.

        A capacitive screen uses electric current, which we've been speaking about.

        Richard is referring to a feature that I am unfortunately unfamiliar with. To my knowledge, touchscreen sensitivity is normally controlled at the driver level, although I'm certain some manufacturers have included a manual control for this. Most I would guess do not, unfortunately.

  3. Saikat Basu
    September 6, 2012 at 6:39 am

    If you are really interested in the technical aspects of it, here is a detailed technical explanation on the basics of why waterproofing a capacitive touchscreen is important: http://www.eetimes.com/design/industrial-control/4374783/The-basics-of-waterproofing-capacitive-touchscreens

    • Sunil
      September 6, 2012 at 6:31 pm

      Thanks

  4. Kannon Y
    September 6, 2012 at 5:52 am

    The capacitive screens used in most smartphones are conductive, and run a very small electrical charge through the screen. Whenever you touch the surface, a small charge runs through the moisture in your fingertips, triggering the touch response.

    By that same logic, a drop of water should cause the screen to register a touch - a persistent touch, since water (with small ions in it) conducts electricity - and your device will most certainly malfunction.

    To date, there is no fix for this. However, I noticed that on my phone, water doesn't cause this issue. I'm not sure why, since the technology behind its screen is capacitive.

    You may find these links interesting:

    http://forum.xda-developers.com/archive/index.php/t-1148249.html

    http://en.wikipedia.org/wiki/Capacitive_sensing

    Speaking of which, my Nook Touch, which uses an infrared sensor instead of a capacitive screen, is completely uneffected by water on its touch surface. It makes me wish that phone manufacturers would switch from the unreliable, drainy capacitive tech to something more reliable and battery efficient, like infrared sensor. I doubt such a phone will ever see the light of day. :-(

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