My iphone keeps shutting down ever since i updated to ios 7?

My iphone 4s was working great until i updated it to ios7 even if its fully charged it just stays for a few minutes and shuts down! And shows the charger sign. Then when i plug it in again it works and the battery is full! What should i do.

This has been happening to my phone to! I think it is just iOS 7. You could take it to your phone company and get their advice on it though. Or try plugging it into the computer. Hope this helped!

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