Sound reception in samsung galaxy j2 is quite good.it have good quality speaker besides front camera which gives perfect in air sound and mike at bottom does work good.the display size is 4.7 inches and dimensions of mobile are 7.8 x 15 x 4.4 Cm which can easily fits in your palm.the mobile is quite thinner with metallic border. the curved edges of mobile looks elegant.the phone comes with android marshmello, cameras are back camera of 8MP and front camera of 5MP.the phone is quite reliable and durable.the metallic border gives toughness to design.at the cost of 9710 rupees this phone is best in market.the money you throw is worth of the specs you get in phone.