just bought the iphone second hand and this is my first iphone so still learning the ropes. for some reason, and i have looked at all the settings and i can't seem to find a solution, the phone rings when i have a phone call, sound for alarm but no sound for SMS, notifications, random noises e.g. locking the iphone. Does anyone know how to fix this? I'm sure there's a simple answer but i just can't seem to see it! If there isn't, would i be as well off to restore the ipod and start again?