I was using this samsung galaxy A7 and few days back I bought a Samsung galaxy A9 and I didnt find any different feature from samsung galaxy A7. apart from processor and touch pad.It always hags if memory becomes lot and very bad battery backup and it should be done switchoff and switch once it get hanged and I got a problem with rhis and I went to samsung customer service even tgey didnt knew the exact problem with that and they took 3 days time to get it ready but fir the time being they have done something and gave mr back but again after 2 days later I faced with same problem with this samsung mobile very bad service they provided