Could anyone kindly tell me the made of the factory installed antenna and where I can order one for GPS/GSM phone?

The reason I am asking this that my car doesn't come with a dedicate antenna for the GSM phone. However, when I open up a black plastic cover located near the rear of the roof, I notice that there is a female connector already there. Does it imply that I can simply add an antenna base and whip, and then I will be able to use the pre-wire signal cable to the front, behind the radio. Moreover, I am quite sure that the antenna signal is running all the way from the rear roof to the center console because I also find an antenna connector there.

If my assumption is correct, I can simply install my Nokia 6090 car phone with the antenna setup. This simplifies the installation a great deal as I don't need to run a new signal cable all the way to the roof.

BTW, my car is a RHD Euro. Spec. model in Hong Kong and I think the setup is mostly the same as your LHD model. I have been trying hard to find this OEM antenna from the Internet, but without success. So any lead on the supply of the antenna or any techincal advise is highly appreciated.

Thank you in advance.