GSM Phone in Volvo S 80..
 

Hello Everybody, I just bought a Volvo S 80 (2000 model), and it's nice except that, It's phone not working... There's no slot to put the SIM card and phone is not switching on. behind the rear seat, under the rear panel behind the back seat's head rest( where the rear speakers are located) there's a cartige like gadget, with a sensor like thing attached to it. and a two way on off switch. Does anybody know what it is? Pl.answer, Thanks, Ravi