I am using J2 2018 from last 11 months and now going to share my experience about its Display, Battery and software here.
DISPLAY
The Display of the phone is a Super AMOLED panel which give a very bright and vibrant colors. The Resolution of this panel is of 540p which is Okay. The blacks on this phone are perfect black.
Even though the battery is of 2600 mAh, The battery life is great on this phone. If you charge the battery 80 % on morning you can expect 25-30 % juice left on night.
....to be continued
