Welcome to our community! Here you can share advice and tips with thousands of other Microsoft mobile devices users around the world in English. Please take a moment to read our community guidelines for more information. Everyone can search and read the discussions, but to post your own question or reply to others you need to sign in first. If this is your first time here, you can choose an alias to represent you. If you don't have an account yet, please register here.
on some songs, yes, the separation between audio channels is discernable. But if you are referring to the general loudness of sound then they should be fairly equal. have you checked that you have plugged in your headphones all the way?
not so quick my friend. have you checked via Nokia suite that you have the latest firmware installed on your device? if there are any updates, please update to the latest version offered. failing that, you can Restore your phone to factory settings, and if that still isn't working, then re-install your current firmware thru Nokia Suite.
failing all of that, you will need to take your phone to your local Nokia Care point for them to inspect: http://nokia.com/support