My iphone 4s shuts itself off for no reason

HI ive recently bought an iphone 4s, which has started switching itself off for no reason, the battery is fine and im shutting down all open apps ( a common battery drain - ive seen people complaining about the lack of battery whilst unaware that all their apps are still running).
Any ideas anyone?
cheers
dave

Start with the basics. Try to Reset your device.
Press and hold both the Sleep/Wake button and the Home button for at least ten seconds, until the Apple logo appears (ignore the Slide to Power Off that shows up first).

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It could have powered off. Try holding the sleep button down for a few seconds until the apple logo appears to restart it

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my iphone 4s shuts itself off all the time. starts normal and then shut it off and start all over again, what is wrong?

Your iPHone is designed by intention to shut off when there is a reason for the softwarer to believe that danger is immenent to the hardware. This can occurr if the software is running applications that have been corrupted due to all types of different scenarios. My best advice to you would be to restore your device back to default manufactures settings and do NOT restore the current backup of the IOS program currently running.
If this corrects the problem with your device intermittently restarting you will then know you have had applications there were corrupted on your device. Once you are convinced there are no issues with the hardware of your device you then are free to begin downloading software apps that were earlier on the device.
Good luck.

HT201412 my iphone just turn it off for no reason, when i turn it on after 2or3 min it just shutdown by it self, and even when i charge my iphone it works, but once i take it off then it shutdown again.

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Hello there, queen168.
The following Knowledge Base article provides some good steps for troubleshooting your particular issue:
iPhone: Hardware troubleshooting
http://support.apple.com/kb/ts2802
Particularly:
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.
Connect the iPhone to the iPhone's USB power adapter and let it charge for at least ten minutes.
After at least 30 minutes, if:
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 reaching out to Apple Support Communities.
Cheers,
Pedro.

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1. On your iPhone 4 press and hold both the button and the Home button for about ten seconds. After ten seconds you should see the Apple logo showing up.
2. Now try to run you phone again and see if it works.
If a hard reset the still can't get the device back to a working order.
1. Plug in the device to the cumputer and start iTunes.
2. Press and hold the Sleep/Wake + Home for 10 seconds.
3. Once you see the Apple Logo appears, release the power and continue to hold down the home button for about 5-10 seconds. Look iniTunes and see if your device have shows up.
4. iTunes will notify you that you are now in Recovery mode. Click on OK to continue with the restore process.
5. Next press and hold on the SHIFT button and click on the Restore button. Select the latest IPSW file and the prompt appears.
6. iTunes should now attempt to get your device back to the manufacturer setting.
7. iTunes will later give you an opportunity to restore you content from the PC. Every time when you do a sync, iTunes makes a backup so you can choose the latest backup from the sync.

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You seem to be confusing reseting the settings and restoring the phone. See this Apple support article - Restoring your iPhone... section. (This is also clearly described in the User Guide - bookmarked in iPhone Safari):
http://support.apple.com/kb/HT1414
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Try resetting it by holding the home and power keys down until the Apple logo appears.
Barry

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Hi there 203nancyc,
You may find the troubleshooting steps in the article below helpful.
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.
Connect the iPhone to the iPhone's USB power adapter and let it charge for at least ten minutes.
After at least 30 minutes, if:
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.
Issue not resolved
My issue is still not resolved. What do I do next?
Contact Apple Support.
-Griff W.

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Hi MeMDz97,
If you are having issues with your iPhone powering off unexpectedly you may want to follow the steps in this article for troubleshooting -
iPhone: Hardware troubleshooting
http://support.apple.com/kb/TS2802
In particular this section -
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 LCIs and corrosion.
Connect the iPhone to the iPhone's USB power adapter and let it charge for at least ten minutes.
After at least 30 minutes, if:
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.
Best,
Brett L

My iphone 4s shuts itself off for no reason

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