As you know that j2 is a new model which has lsunced in the market . it is newley made device and have several fucntion.
some of the changes and good things about j2 pro are given below -:
1) good camera
2) 2600 mah battery capacity
3) 2 gb ram
3) 5 mega pixel front camera
4) version android 6.0.1 I love it I perfer you to buy j2 pro because it is much better then others mobiles.