I have been using samsung j7 last 1 month
Good device in this price
Pros= hd diplay quality is very nice
13 mp camera quality good. Front 5mp camera also good
Sound quality is good and loud
Build quality good
Nice design with slim body
Good battery backup
Call quality good in both speaker inear and loud speaker
Cons= low ram only 1.5gb
Laging in high graphic game like asphalt8 and nova3 sanandreas
Over all it is good device