Ok, so I just got my g5 se from EE and I noticed when I use headphones that listening to music I get an extremely noticeable hissing/static every so often. However, if I were to start something like the hifi music file that came with the phone it'd stop. Ive looked for an answer but most problems with hissing/static seem to be with cars. Is there anything that I can do to stop it, or is it a fault with the phone and should I get it replaced?