I listen to a lot of Alternative Rock (Breaking Benjamin, Three Days Grace etc) on my Sony Ericsson phone.
Unfortunately, my Sony Ericsson headphones broke, so I brought a 3.5mm jack Headphone adapter and these headphones.
I'm not one who can analyse the quality of sound with great detail, but what I do hear is of very high quality, with good bass (MegaBass equalizer setting enabled on the phone).
And for the price, these are a excellent pair of headphones, highly recommended. It also includes a wind up headphone case, so you can easily transport your headphones.