Been using Samsung Galaxy j7 2015 till now. I bought it in 2015. It’s rear camera quality is super as well as back. But it lags a lot. The phone became so slow after some days that if you open 2 or three apps in background it hangs and you have too restart it. Sometimes it doesnot even restart then I had to open battery. It charges slow and battery backup is disgusting. Will suggest not to buy it.