I used samsung galaxy s-duos before using j7 prime.i had a bad idea of battery of samsung phones after using galaxy.but recently I am using samsung galaxy j7 prime and it is really good to have.it’s feature is awesome.system is working fast and having no problem at all.ram is incredible and storage is enough to keep anything.overall I am satisfied with this phone and I will say everyone to buy this phone if they need a good smart phone under 19k.