Live testing. The Samsung Galaxy J7 is the larger version of the Galaxy J5. It has similar features, but a larger, 5.5-inch display. After the redesign of the entire series, the J7, too, now has a non-removable battery. To find out about other changes, take a look at our detailed review.
https://www.notebookcheck.net/Samsung-Galaxy-J7-2017-Duos-Smartphone-Review.236902.0.html
The GPU is an mp2 GPU not an mp1 GPU
I wonder what make the 2017 model to have a worse battery life than the 2016 model, because it really doesn't make sense.