Basically, we have an old Sony Ericsson P800 phone, and the reason why its been abandoned is because it stopped working. The problem is, that sometimes you can hear people speaking when making a call, and sometimes you can't. This is at both ends of the phone call. Does anyone know how to fix this, or what the problem is? I'd be grateful, because if I can get this working, my mum said she'll use it then I can have her P910i