I use a 5320 xpressmusic. I bought it 7 months ago. Problem is that my Increase Sound Button (that button which increases the sound) doesn't work at all. I can lower the sound but if i lower, then i can't increase as increase button doesn't work. Please, help me. What can i do ? Should i bring it to nokia careline ? Or do u know any idea or software by which i can increase the sound of Music Player and the sound of while talking with one. I hard reset my phone and now the sound of Music player is low. I can't increase Same with while talking with other. Is there any software which i can use to increase the sound by pressing keypad button not the volume button ?