Soft reset your iOS devices
To perform a soft reset for your iOS devices, follow the steps:
◉ Press and hold the Home button (big circle below the screen) and the Sleep/Wake button (on top of the iPhone) simultaneously.
◉ Continue holding both buttons until the iPhone shuts off and begins to restart. This will take anywhere from 10-20 seconds.
◉ Ignore the power off request and continue holding continue pressing the buttons.
◉ You may let go when you see the silver Apple logo. You have now completed the soft reset successfully.
I hope this works! 😉 🙂
Cheers 😀
iMac, OS X Mountain Lion (10.8.4)