Stephen schrieb:
> [...]
> Is there a setting somewhere that I've (or someone else has!)
> accidentally changed? I have no security code to do a factory reset.
There are volume-up and -down keys on the side of the phone. Try
pressing the up key while in a call.
> Or is it a hardware fault?
That may well be the case.
You can download the manuals for the V505 or V540 from
http://www.hellomoto.com. They should also apply to the V525 for the
most part.
HTH,
Andreas