Hi and Welcome. My Name is ***** ***** I look forward to assisting you today with your question.
It seems like your iPhone's software is corrupted. First we can reset your iPhone and see if it works or not. Press and hold down the Power button and Home button at the same time until it shows the Apple logo. When you see the Apple logo, release the buttons and let it boot.
Please let me know if that didn't work, so we can continue troubleshooting.
If this doesn't work, please don't rate me bad or poor. Instead please let me know by replying in here and I will continue to help you