Apple has released an update today to address power issues with the iPhone 4S and power issues. But it can’t hurt to update all your devices to ios 5.0.1. And now you can do it without iTunes!
Click on Settings:
Click on General:
Click on Software Update
Click on Download and Install. Its best to make sure your battery is charged, otherwise plug in to a power source.
If you do this update, please let us know how much of a difference it made.