Jan Pawel Martyniak
Jan Pawel Martyniak voted up Soul Fly's answer

You probably knocked a connector loose. Unless you are willing to try to fix the device yourself you will have to send it in for repairs.

btw here is a tear down guide for the 5c. The lower image is where you will find the connectors.

www.ifixit.com/Teardown/iPhone+5c.

Jan Pawel Martyniak
Jan Pawel Martyniak voted up Soul Fly's answer

You probably knocked a connector loose. Unless you are willing to try to fix the device yourself you will have to send it in for repairs.

btw here is a tear down guide for the 5c. The lower image is where you will find the connectors.

www.ifixit.com/Teardown/iPhone+5c.