Samsung j7 is very beautiful smart phone.i have also used this smart phone.u can install any softwear in this phone that you have need.but most common problem have this phone( hanging) .and its price is very high in pakistan and all over the world.i request the company who made this mobile phone that its smart phone price maintain minium 20000.but if any person want to buy a high quality set I request him that purchase samsung galaxy because this set much better other smart phones.