Just now I have received my J7 6. Earlier I was used J7, comparing to the J7 6 to old J7 it has minor changes but powerful changes i.e Battery, Processor, Ram, Marshmallow( OS) , Metalic Design except these changes remain all are same. Some of the pitfalls still came with J7 6 from old J7
those are
Less ringtone volume.
Call Quality
not full HD. it is a good mobile for who looking original companies.
samsung is a worldwide trusted brand so no problem with device. service centers in all areas