Can't login to my ICloud on my iphone 4 on ios 6

I've been trying to login to my ICloud but when I go to enter the credentials and the verification code , a loading screens appears for 3 seconds and then it gets stuck at a blank white screen , I've tried to look for the and answers but none seem to have faced this issue .

The appstore is working I can normally see the apps it even prompted me to update my outdated apps but it gets stuck at the credentials screen, so it is making connection with the apple servers.

One solution that I seen floating but haven't tried is resetting the device and login at the initial setup screen, in avoiding this because I have like 50 games installed and reinstalling them is gonna be pain