IPhone 4S keeps going dark

Hi I upgraded the software to ios 6.12 . Since then the screen occasionally goes dark . Will only come back bright if I press home and on /off together . I have done a restore but still happens . Any suggestions before I ring apple !!!!!

This is hardware fault of LCD Display or Logic Board Display controllers. Restore iPhone with iTunes on computer. See if better. If still problem and you have Warranty or AppleCare, make Genius reservation and take to Apple for resolution. If no coverage, the next step would be replacement of entire front assembly. If still problem there is no resonable fix. If you want this handled by Apple, they do not replace iPhone 4S front screens, they replace the entire iPhone 4S exactly like yours for $199.

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Good. This means that, in your existing account, a setting is bad or .plist file is corrupt. As identifying the rascal may take time, my suggestion is to move data to the new account, must be with administrative privileges. As the contents of each account is unavailable to the other, there are two methods:
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- if not, save your settings unto a flash drive; this is a limited backup just to avoid putting back settings for Mail etc. I am satisfied with iBackup (grapefruit.ch), but there are other backup utilitites, Time Machine, for example; TM does not allow limited backup, it works if you have a large external disk. If backup disk is not available, move files to shared folder, which is visibile from both accounts, and from there to the new account.
May seem difficult, in fact it is not. You must just move data from one account to another. Now, take care to new apps you install or new functions you activate. When you notice something strange, that may be the cause of this behavior.

My iphone 4 keeps going into guided acess mode were i cant touch anything. i have for gotten my password and i cant seem to press the home button to go home. it tells me to put a password in but i have no clue. please HELPPPP!!!!!!

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Just reset your phone:
Press the Sleep/Wake button & Home button at the same time, keep pressing until you see the Apple logo, then release.
This should let you use the phone normally, no restore needed.

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The screen will flicker while in lock mode then the slide to turn off screen will appear. This happens without touching any button or screen.

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My Iphone 4 keeps going blank. I have to reset it. The last time it wouldn't come back. Had to go to ATT store. They plugged it in to wall and it came back on. It's doing it more and more.
What is wrong?

Try a Restore...
1: Connect the device to Your computer and open iTunes.
2: If the device appears in iTunes, select and click Restore on the Summary pane.
Restoring > http://support.apple.com/kb/HT1414
Note:
Also consider Deleting any Apps you have Purchased / Downloaded but you now never use..

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Basic troubleshooting from the User's Guide is reset, restart, restore (first from backup then as new). Try each of these in order until the issue is resolved.

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See > Change your iTunes Store country
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I did that, and the issue persisted. I'm several hours from an Apple store, and I can't be without a phone for that long. Not to mention they want $269 to fix it, and I only paid $399 for it.

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Try doing a reset on your iPhone,
Reset your iPhone by pressing the 'Sleep' and 'Home' button at the same time for about 15 seconds or so. Your iPhone will then go through a reset / reboot procedure and will be ready for use within about a minute.
Don't worry about doing this as you will not lose data or settings.
Good luck and do report back.

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When the "white symbol" is the white Apple logo, it is starting up....
Can take some time.

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Does anyone have a idea what is going on with my iphone?
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I have auto brightness off, and when im on my phone the light goes dark? It did it today when i was ending a call just go very dark? It doesnt do it all the time just at random times?

This is hardware fault of LCD Display or Logic Board Display controllers. Restore iPhone with iTunes on computer. See if better. If still problem and you have Warranty or AppleCare, make Genius reservation and take to Apple for resolution. If no coverage, the next step would be replacement of entire front assembly. If still problem there is no resonable fix. If you want this handled by Apple, they do not replace iPhone 4S front screens, they replace the entire iPhone 4S exactly like yours for $199.

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Does anyone know the reason why the screen goes dark all by itself?

First try a Reset ( No Data will be Lost )
Press and hold the Sleep/Wake button and the Home button at the same time for at least Ten seconds... (But can take Longer)... until the Apple logo appears. Release the Buttons
If no joy... Try a Restore...
1: Connect the device to Your computer and open iTunes.
2: If the device appears in iTunes, select and click Restore on the Summary pane.
Restoring > http://support.apple.com/kb/HT1414
Make sure you have the Current Version of iTunes Installed on your computer
iTunes free download from www.itunes.com/download
3: If Unable to Restore, try using the Steps in this article to force the device into Recovery Mode.
Note on Recovery Mode.
You may need to try this More than Once... Be sure to Follow ALL the Steps...
After you have Recovered your Device...
Re-Sync your Content or Restore from the most Recent Backup...
Restore from Backup > http://support.apple.com/kb/ht1766

My backlight keeps going dark....

My backlight keeps going off and my screen goes dark. You can still make out all of the features...but everything is really dark. It will just go on and go off. Sometimes when I close my computer and just open it up again, the backlight comes on again. Does anyone else have this problem? Does anyone know how to fix it?

Unchecking "Automatically reduce brightness..." in the Energy Saver Preferences fixed this problem for me.
Original Symptoms:
Turn on Macbook, screen becomes fully lit through the apple screen, then dims completely when the OS begins to load. The display can be seen slightly using ambient light, but the backlight is completely off.
Temporary Fix:
The temporary fix was to dim the screen using the function key, then brighten one or two levels. Brightening any more would cause the backlight to go off.
The Cure:
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All iPhones require a SIM for updating/activating.
The SIM does not need to be active, simply insert a SIM card and activate the device. Borrow a SIM from a friend if necessary.

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When the "white symbol" is the white Apple logo, it is starting up....
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IPhone 4S keeps going dark

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