J2 is not so Good, J2pro is very good but battery not good. battery 2600 mHA. Sound Quality is not good .
J2 and J2 pro sem Body very attractive Look and Design is Awsome.
Why the J2 pro is better?
Because - RAM - J2 1.5 GB / J2 pro is 2 GB ROM - J2 8 GB / J2 pro is 16 GB OPERATING SYSTEM - J2 Android 6.0( Marshmallow) / J2 pro Android 6.0.1( Marshmallow) Wi-Fi STANDARDS SUPPORTED - J2 NO / J2 pro 802.11 b/g/N Personali Recommend J2 pro is better. I use 5 Month to go.