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Message: <blockquote data-quote="mitchflorida" data-source="post: 373682" data-attributes="member: 41030">Pairing your cellphone with Bluetooth has nothing to do with having an OnStar subscription.  He is asking if his call reception would be better using the OnStar antenna than on his own phone.OnStar now uses the AT&T network, but I am sure it has roaming in remote areas.  My guess is that the OnStar antenna would be more sensitive than your cellphone's inside of your car.   But unless you are really in the middle of nowhere both would work fine.According to GM Authority sources, General Motors plans to sunset the OnStar Hands-Free Calling service in 2022. At that point, all vehicles on the road still equipped with the feature will no longer have the ability to make calls using the OnStar Hands-Free Calling system.</blockquote>