can't open settings in samsung s3

[AC Question]

hi , could anybody help me please, after updating my samsung galaxy s3 i can't open the setting..
i want to do factory settings on my phone but can't as i can't settings. my phone is responding very slowly...TIA

 

[B. Diddy]

Welcome to Android Central! How did you update your phone? Was it a system update over-the-air, or did you manually install some kind of system update?

Try booting into Recovery and clearing the system cache partition: http://forums.androidcentral.com/sa...ing-into-recovery-mode-galaxy-s2-s3-tab2.html