My iphone 4 keeps switching off if not used for an hour or so and needs the reboot to turn it on

My IPhone 4 keeps switching off if not used for an hour or so and needs the reboot to turn it back on again?

Hi, DREWidz.
Thank you for visiting Apple Support Communities.
It sounds like you are experiencing an issue with your device unexpectedly restarts. Here are some troubleshooting steps that may help.
iOS: Device unexpectedly restarts, displays Apple logo, or powers off
http://support.apple.com/en-us/TS5356
Cheers,
Jason H.

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some one should help....

My iphone is switched off suddenly n then it wont b started it continously shows the apple logo then again switched off automatically and when i charge it so it was switched on and after a long time then it shows battery low and then its also show 4% batt

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Hello s0ha1b
If all you get is the Apple logo and it powering off, then the next step is to put your iPhone into recovery mode and then use iTunes to restore it. If you have a back up, then you can put that on there to once the restore is complete.
If you can't update or restore your iOS device
http://support.apple.com/kb/HT1808
Regards,
-Norm G.

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You should be able to select Force Quit from the menu beneath the Apple icon in Finder
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OS X - Support
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That to add to your confusion is another way of saving documents from iWork apps (on iOS devices).
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Since my set up is working for me, let me try (by example) to describe how iCloud works:
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My iphone 4 keeps switching off if not used for an hour or so and needs the reboot to turn it on

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