iPhone 3G screen not responding/turning on ?

Discussion in 'iPhone Tips, Help and Troubleshooting' started by xcrskim, Jan 28, 2009.

  1. xcrskim macrumors member

    May 12, 2007
    Hi all.

    I have an iPhone 3g 2.2 firmware and my screen hasn't been working today.

    The phone still vibrates when i recieve a call or a text but the screen doesn't turn on, i tried resetting it by holding down the power and front button but no response.
    However, here's the twist.. the iPhone screen works when it is plugged into the wall charger. after i remove the wall charger, the phone goes back to being dysfunctional in about 5-10 minutes.

    anyone know how to fix this ?
    thanks in advance !
  2. benflick macrumors 68020


    Jul 11, 2008
    Cincinnati, Ohio
    Take it to an Apple store and they will give you a replacement. Or you can try restoring the phone first.
  3. xcrskim thread starter macrumors member

    May 12, 2007
  4. Atomicfission92 macrumors regular

    Jan 18, 2009
    Plug the phone into your USB Sync cable. Put it into the DFU mode and iTunes will see and ask to do a restore. Restore the phone and try again.

    I had this problem with my Jailbroken 2.1.
  5. DPA macrumors 65816


    I think we all know to do this.:rolleyes:
    If you are on Mac OS X 10.5.6, your Mac will not recognize the iPhone in DFU mode. You have to use a USB hub and if that doesn't work then you will have to find a different computer to restore on. There is a "fix" out there but it only works 30% of the time and I am VERY skeptical about it. If something goes wrong like it crashes in the middle of rebuilding the cache, your mouse/trackpad could go out and you could lose functionality of your USB ports. You can try powering off while connected to a USB wall charger. Then open iTunes on your computer. Hold the Home Button while you connect your iPhone to the USB cord connected to your computer. Your iPhone doesn't have to be in DFU mode to do this.

  6. Hman macrumors newbie

    Jan 29, 2009
    iPhone 3G Black Screen freeze

    I just received a replacement Iphone 3G earlier this week from my local Apple store and within the 1st day noticed it would freeze with a ‘black screen’ after unlocking the phone with a password. This occurred intermittently 4 separate times within 24 hour period each lasting from 10 minutes to more than a hour. Fully resetting the phone (holding both the home and power buttons down for 10 seconds until the apple logo appeared) did NOT correct this issue. Immediately after entering my password (and this is the only time this occurs) the phone would switch to a black screen, however it does appear the phone is still on in the background (incoming calls ring, and some screen clicks can be heard). Power, screen touch, volume, and other buttons all don’t seem to be able to turn the screen back on
    A possible fix????? The 4th time this happened I noticed the screen itsefl actually appeared to be on in the background but with the brightness set so low ~ maybe 1% - that only the very slightest shadow of the screen appeared to be visible in the background. I went into settings > brightness and noticed “auto brightness” was selected. If I manually lower the brightness to the absolute minimum, I seem to get the same screen view that I was able to see during the last black screen episode.I have now turned auto brightness ‘off’ and have not yet observed the problem reccurring. A point of note I updated it to 2.2.1 last nigth after the 1st 3 occurnces, but it happened agin this morning for over an hour I couldn't get into the phone no matter what I tried. It was during this hour that I noticed the very very slight reminants of a screen view.
    My hypothesis. I have seen a lot of blog traffic indicating this problem is widespread and some indicate you need to disable the phone password as one fix. This indicates there is something in the firmware logic tied to using a password. There have been a lot of complaints about battery life and since it's release, Apple has tailored several of their updates for the 3G to tactics aimed at preserving/extending the battery charge. I believe there is a bug in these battery save algorithms that might automatically re-adjust the brightness to the minimum when inputting a password under certain but not all circumstances. I will keep folks posted if manually turning auto brightness off corrects the issue. If not, I still suspect there is an issue in the battery save algorithm/firmware that needs to be reworked, and it is also likely tied to situations where the phone is locked with a password.
  7. BURumbler89 macrumors newbie

    May 17, 2008

    I just had a similar experience. I wanted to check the time so clicked the home button and...nothing. I tried again and again, and tried the unlock button and tried holding the unlock button...Nothing. I then connected it to my computer and suddenly the screen went through every click I had just done (including taking a screen shot apparently?). I thought all was fixed and unplugged it again. When I unplugged it the screen remained working and i flipped through a few screens to make sure. It was fine, I locked it again. I once again went to check the time and it wouldn't work again. This time I plugged it in and...NOTHING. I received the noises allowing me to know I recieved an e-mail and a txt at the same time but I couldn't do anything. I am in the process of doing a restore. Any ideas? I don't have an apple store anywhere near me, I don't assume AT&T will do much for me.
  8. ejonathan macrumors newbie

    Nov 16, 2009
    2 Reset Buttons

    I tried everything the previous posts suggests, but nothing worked. So I went to the Apple Store. I was there for only 15 sec. because all the person did was pressed both the HOME and the ON/OFF button at the same time for 15 sec. and the iPhone 3G restarted. All is well. So if you haven't tried this method...try it, maybe it'll work for you.
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