Earphones is not a valuable product but we need it very much. We use it every ehere for talking, listen song. First off all allways check the 3.5 mm jack and and check this with you mobile, just because of it is support on your device or not. Then check its sound some time I feel the earphones have manufacturing problem and it do not supprt your device. But some time it provides you good sound but it make some noise which you ignored. But this is a massive problem. Always buy trusted companies earphones like sony, jbl, samsung, nokia. And do not use local companies earphone just because first few days provide you best sound but it is hermfull for your ear. Ok I suggest the branded companies, if you found your product is manufacturing defects you can claim.