My father has a 750i, and he is not impressed with the cell signal once the phone is plugged into the car. The dealer told him the difference is the 745 without bluetooth had a booster built into the car which helped with signal strength. I was wondering if there is a booster out there that can be fitted into the new car to improve the signal. Any suggestions will be great.

 

i have nokia 6230 which when connected into the cradle has improved signal strength. what kind of phone is he using? not all bluetooth phones/cradels use external antenna.

 

He acctually just added a wireless booster which seems to have cured the problem. Supposedly it increases cell signal by a couple percent.

 

is this a bmw wireless booster? if so, can you get me a part #? would love look into it for myself. thanks...

 

It is acctually an aftermarket booster that is placed inside the trunk. All that is required is that it be within six feet of the cell antenna and it boosts signal strength. Here is the link so you can check it out.

http://cellantenna.com/Boosters/da4kmr.htm

 

what;s weird is I tried to disable bluetooth in those bad areas..and it works better..hmmm

thanks fro the link Alex13188, i need that