I bought my S3 two months ago and upgraded to Jellybean a week later via Kies. Since then my phone has become so slow. Im scared to open contacts or the phone...it takes ages to open!!! tried a factory restore. doesnt help at all. Jelly bean is an absolute disaster. I mean whats the point buying a quadcore if its gonna take 6 seconds to open your contacts list! im disappointed. Google better do something about it~! Any solutions out there? or am i the only one facing this problem!