My name is ***** ***** certified professional with over 10 years experience. I will be glad to assist you with this.
I am sorry to hear that you are having this issue.
Follow these steps please.
Hold the home button and the power button down for about 30 seconds or until the Apple logo appears on the screen, then release both buttons. If it does not work, release the buttons after 30 seconds and then hold the power/sleep button only for 60 seconds then try holding both buttons again. Repeat the process a few times and then if it does not work you will need to use your computer t restore the iPhone. Please follow these steps,
Please let me know if you need any other assistance.
Please take a moment to rate my service positively by clicking one of the stars at the top of the screen then click on submit.
Thank you very much!