Chosen Solution

After i enter the correct passcode on my phone it goes to a loading screen, then goes back to the passcode screen. ive even tried my thumbprint and it wont work! It was working fine this morning and then this problem just randomly occured!! Help!!

Do an update via iTunes. Turn off phone and hold home button while plugging the cable in computer or phone whichever you plug in first and after. That is to boot recovery mode and allow you to update the phone.