Samsung j2 ( 2017) is bad product. I am useing this mobile for 5 month. First time I have no problem but after 2 month I was hanging problem with this mobile. Now I have same problem. I think in this phone is not have heavy procceser. Samsung j2 ( 2017) have only 1 gb ram and 8 gb storage. So I think it is mean reason for hacking. In this product if you have download heavy game about 100 mb. It can not start smith. I may be born hanging problem. If you have buy only for calling, camera, net, small application. So you buy it but you have big purpose like as big app, camera quality, etc that it is not able for you. Thank you