Huawei GR5 2017 / Honor 6x benefits compared to J7 prime.
LTPS IPS LCD.
Faster CPU.
More storage.
More RAM.
Dual Camera.
Phase detection autofocus.
DTS audio quality.
Speaker is louder.
Noise cancellation ( 2 mics) .
Compass sensor for better navigation.
Looks better than J7 prime.
EMUI better than TouchWiz.
Nougat upgrade available.
After upgrading to Nougat, if you don't like it. You can downgrade backwards to Marshmallow.
