Samsung always try to rule the market by designing budget mobiles like J1 and thts why we see the dominance of samsung in electronics sector.
As I use my friend’s J1 mobile near about more than week and the experience I got is bit satisfying as I see some hanging problems twice a day and also heating issues. However customer support is good and also easy to handle operations.
As it has 1gb ram , but I always face problems to play graphic based games. No doubt it supports 4g which is plus point. The design is not very stylish seems an ordinary mobile. Moreover price is also above than the average, if we compare it with other companies providing same specification.
So overall, I conclude that, if you want a budget phone then go with Redmi or Oppo which provide much more than it.