Works differently in different devices means it depends on the device that we are using it in . If we are using it in iphone or phones above 20000 it gives great sound . But if we are using it in a cheap phone then its gives the sound like a normal earphone that’s a big reason to not to buy it , because if you have h cheap phone then it will work for you like any other earphones there wouldn’t be anything different about it so it would be a bad idea to buy it if you don’t have a phone with great price .