I'm sorry about the issue. On your iPhone, please press and hold both the Power button and the Home button (which is located right below the screen) for at least 10 seconds until the Apple logo appears on the screen, then release. Then wait a bit and check.
Please reply at the box below to continue. Thank you,
When you are available, please type at the box below, then click on the Send button below to communicate with me, so I can help further. Thank you,
If needed, please click on the two websites below for the illustration of the Home and Power buttons: