Why did some of my apps stop working after iOS 8.1.1 update?

[iMore Question]

After iOS 8.1.1 camera is not working

After iOS 8.1.1 update my camera, photo booth and FaceTime aren't working

 

[nikkisharif]

Re: After iOS 8.1.1 camera is not working

Try rebooting your device by holding the home & power buttons at the same time until the Apple logo appears. Sometimes this fixes those quirky bugs. If it still doesn't work, you may want to make a genius appointment.