Slim and easy to carry it.The UI(User interference) is friendly and the battery life is outstanding.
For a cheap phone its worth it.
But the Storage is really a let down but other then that its really great! If you take care of the phone it should be fine.
If your looking for a cheap phone I highly suggest this one.
The Galaxy J1 4G comes with 4.5-inch Super AMOLED display with WVGA(800 x 480 pixels) resolution. It will be powered by an unknown quad-core processor coupled with 1GB of RAM. The device includes 8GB of internal storage that can be further expandable via MicroSD card slot. It runs on ANdrod 5.1 Lollipop based TouchWiz UI laid on top