I am not very happy with this phone. One major problem I faced is about connectivity with WiFi which is somewhat poor. I had problems to login to my Google account through WiFi and visited Samsung service centre 2 times for the same. Finally I could login after using a data card. I do not suspect low signal strength of WiFi as with the same WiFi at my home I could login to my Google account from my other Samsung Grand Max mobile.
It is also noticed that this on7 frequently freezes on watching YouTube for a longer time.