Now I am using J7, previously I used J2. It has 2gb ram and internal 16gb ram and expandable upto 128gb, similar to J7 apart from the size of the phone. J7 has 5 inch HD display, 8mp rear camera/5mp front camera, 2600mah battery and spreadtrum quad core 1.5ghz processor. I used J2 for 8 months and I saw that its battery was very poor. It was also lagging too much. So after a year I brought a phone j7. It has beautiful texture and is performing quite well.