I and my friend had bought samsung galaxy j7 nxt. Heating problem is very common in this model. And hanging problem is also be started from 2 to 3 month after use. Design of j7 is almost good but there is also a problem in its LCD it means if the touch pad of j7 has broken then we are unable to change tuch pad separatly. If we or any export try to remove tuch pad but they become unable to do because LCD breaks during seperation of tuch pad so its become expencive