Samsung galaxy J7 is the one of the thr best smartphone of the world.its sound quality better among another smartphone.Its sound is HD . This smartphone very easily to use for any one .Its style and design is glamlous and stylist look. In this smartphone camera quality is marvelousand its RAM is higher. this smartphone is not hangable like other.I am using this smartphone from 3year really it is very good . Its price price is less ( $15500) .It has big screen size( 5.5) inch its my advice please buy it