I bought samsung j2 in nov 2015.it is budgeted smartphone in which you will find all the features that you want in your smartphone.i am using this smartphone from more than a year and from then I am not facing any issue regarding this.its super amoled display make your phone so attractive.its 1 ghz processor and 1 gb ram never hanged your phone and it also good battery backup.and its also have the facility of otg compatibility means via otg cable you can use pen drive for a backup of files.one of the little drawbacks of this phone is that it have around 4.3 gb user memory and its not enough .it shoud be around 8gb
if who have fair budget for smartphone than I would recommend to buy this phone.