Hi guys, I am also using samsung J2 from 2015. Now its almost 3 years or above that I still using this phone. In these 3 years, I noticed that its battery backup is ok ok .Also, some people saying me that this phone is hang too much . So guys I want to tell you that the hanging of phone is depend on their RAM and processor. If you use phone of 2 GB RAM and you install higher applications and games then obviously it hangs. This phone display is also good .
All over I said that this phone is just ok and simple . I wont tell you that buy this phone it depends on your mind.