1 Why can I hear music? This is because your ears have the function of collecting sounds.

Why can I hear you clearly on the other end of the phone? This is because you can focus your mouth on the microphone.

I can't hear the music clearly on the other end of the phone, just because the sound is too scattered and the power of the mobile phone is not enough.

If you want to hear clearly, either use hands-free or get closer, the effect may not be good.