I am using Samsung j2 phone and till date I have not faced any problems. And plus now company have installed new feature s BIKE mode which have made it more likely to me at least .
Sound of the phone is good not a problem with that, plus headphones quality is outstanding. all Samsung phone have a good interface and with galaxy j2 it is having very good themes preinstalled in it. Samsung galaxy j2 is very slim and hardly weight , outside body design is very good.
Samsumg j2 is like treasure of features . It is having ultra data saving mode , s bike mode , ultra Bawtry saving mode , smart manager , knox antivires preinstalled , many theams preinstalled, , etc, etc
There are so many sirvice centre of samsung, its like airtel 4g every where , you can be very rellyable on the phone with 1 year manufacturing warenty.I know there are phones with more specification than this phone but samsung j2 is all rounder in its price.So if u r going to buy any phone in futurepls take atleast one look at samsung galaxy j2.