I am currently using a Vodafone V1240 Smartphone and whilst it works fine outside, I work in a barn conversion and it is a fairly thick-walled old building and the signal is more hit and miss - It can usually manage to ring when there is an incoming call, but it is impossible to hold a conveersation.

Are there any easy fixes to improve reception indoors ? I was thinking of maybe trying a cheap and cheerful car aerial, but does anyone else know of anything that works ?