I bought this phone when it was newly launched in Nov 2012. So I am using it for past 9 months and never had any problem with the phone. I dropped it multiple times but not a scratch. :-)
Great features at affordable price. During my early days, many people confused it for Galaxy Note 2 which was also launched at same time. The only problem I saw is the GPS. It takes some time to locate you. It works but I have to wait few seconds (20-30) before it locates your position.
Due to this I took wrong turns several times while driving. Another thing is, it does not have the light sensor. So no automatic brightness control. Not so important, but good to have features.