During call switch off display to black screen
During call suddenly switch off display to black screen. Calling continues normaly , but is not possible finish this , I must switch off and on full iPhone...... And once one problem - I was think, so this is problem cohere with " Show My caller ID " in setting and now I see, so this function is OFF and is not possible switch ON..... Can you help me any ?
When you make a call or get a call, the screen is supposed to turn off when you bring it to your ear (it has proximity sensors that activate when on a call). It does this so your face doesn't touch the screen while active and push a button.
When you pull it away it is supposed to turn back on.
If it doesn't turn back on there are two possible causes. First case is those that buy and use a case for the phone. If you have a case, there is a good chance you are either using an older case (made for first gen iPhone) on a newer iPhone 3G or your case is just poorly designed. Either way, some cases have a habit of covering the sensor thus it cannot tell when you put the phone to your face or pull away.
If you have a cases (especially if an older case on a new iPhone 3G) remove it and see if the problem continues.
The other possible problem is just a bad sensor. So if you are not using a case and having this problem, take unit to an Apple Store for replacement.
My guess is that you are using a case that was made for the 1st Generation iPhone and not the new iPhone 3G (there is a difference...you cannot use an older case on the newer phones).
Message was edited by: DaVBMan
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HI all,
i have a fault with my iPhone 4s where it randomly crashes and turns off I've uninstalled recent apps to see if they were causing it but hasn't helped, it will randomly do it while using an app or browsing the net, even when recording a video I will get black marks across the screen bit like watching an old film then the whole screen freezes and just fades to black slowly, and only way to turn phone back on is to hold lock and home screen buttons together, but this doesn't always work and I find I have to leave the phone for a few hours worse case has been overnight before it will work again..
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iPhone: Hardware troubleshooting
http://support.apple.com/kb/TS2802
Will not turn on, will not turn on unless connected to power, or unexpected power off
Verify that the Sleep/Wake button functions. If it does not function, inspect it for signs of damage. If the button is damaged or is not functioning when pressed, seek service.
Check if a Liquid Contact Indicator (LCI) is activated or there are signs of corrosion. Learn about LCIsand corrosion.
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The home screen appears: The iPhone should be working. Update to the latest version of iOS if necessary. Continue charging it until it is completely charged and you see this battery icon in the upper-right corner of the screen . Then unplug the phone from power. If it immediately turns off, seek service.
The low-battery image appears, even after the phone has charged for at least 20 minutes: See "iPhone displays the low-battery image and is unresponsive" symptom in this article.
Something other than the Home screen or Low Battery image appears, continue with this article for further troubleshooting steps.
If the iPhone did not turn on, reset it while connected to the iPhone USB power adapter.
If the display turns on, go to step 4.
If the display remains black, go to next step.
Connect the iPhone to a computer and open iTunes. If iTunes recognizes the iPhone and indicates that it is in recovery mode, attempt to restore the iPhone. If the iPhone doesn't appear in iTunes or if you have difficulties in restoring the iPhone, see this article for further assistance.
If restoring the iPhone resolved the issue, go to step 4. If restoring the iPhone did not solve the issue, seek service.
Thanks for using Apple Support Communities.
Have a nice day,
Mario
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