The biggest disadvantage of this phone is its hanging problem. As you know the value of samsung is very high in market but its service is not satisfy their customers. My phone works very slow even I have lots of RAM. It gets heat extremely in normal temperature. RAM is as compare to other phones is very less. Camera quality is moderate. Internal memory is very low. Suddenly it gets switch off. phone style is very old which is not correct any one. The Battery backup is very low and some times mobile are heated during charging time.