Yes, Samsung Galaxy J2 supports VoLTE. Goto settings>About Phone> Download available update. However, I have purchased this phone last month and my phone supports VoLTE without any update.
which is the best Samsung phone among j2 -6 and on7 pro?
on 7 pro.bcz PRO is the newest upgrade version.but j2 6 is little but older specs
Sir mera mobile j2 2015 h jo kafi hang ho rha h kya isme latest version dal sakta pl...
Generally there are no hanging issues in any phone. Keep your RAM free by closing unnecessary apps running in the background. I have Samsung Galaxy J2 2015 and coz it has only 1GB RAM , I need to force stop apps to keep it running smooth.