Switching Between Two iPhones on Apple CarPlay

Apple CarPlay has been around since 2014, and for most of us it works like a charm—until the passenger pulls out their iPhone, which is also paired with the car. CarPlay can remember multiple phones, but it only talks to one at a time, so you’ll sometimes have to tell it which iPhone gets the stage.

First things first: if the infotainment system automatically selects the driver’s phone, you can just carry on. The hassle pops up when the car decides to favor the passenger’s device instead. In that case, you’ll need to manually pick the right phone.

How you do that depends on the make of your vehicle. Most manufacturers hide the option under the Bluetooth or device‑management menu. Look for a setting that lets you designate a “primary” or “preferred” phone. Once you set it, the car should keep that choice for future drives, assuming the same two iPhones show up again.

Some brands, like Hyundai, even let you toggle CarPlay or Android Auto on the fly. If you’re lucky enough to have that feature, you can simply switch the active phone from the infotainment screen without digging through Bluetooth menus.

When you’re in a pinch and the car’s UI is being stubborn, the old‑school trick still works: turn off Bluetooth and Wi‑Fi on the phone you don’t want to use. That forces the system to fall back to the other iPhone. It’s a bit blunt, but it gets the job done.

If you prefer a wired connection, plug the iPhone you want in via Lightning. In theory the car should prioritize the physically‑connected device over any wireless link. In practice, many Reddit users report mixed results, so don’t count on it as a guaranteed fix.

Now, what if the reason you want the passenger’s phone in control is just to change the soundtrack? Apple introduced SharePlay for CarPlay with iOS 17, and it’s a neat workaround. As long as everyone’s on iOS 17 or later, the passenger can join the driver’s Apple Music session and add, reorder, or delete tracks from their own device. The only catch? The driver must have an Apple Music subscription; the passengers don’t need one.

Spotify users aren’t left out either. The app’s Jam feature mirrors SharePlay’s capabilities: anyone in the car can hop into the host’s listening session and toss songs into the queue, even without a Premium account, provided they’re together in the vehicle.

Remember, though, SharePlay and Spotify Jam only handle audio. If a passenger wants to pull up navigation, read messages, or use any other CarPlay app, you’ll still have to switch the CarPlay source using one of the methods described above.

Bottom line: whether you’re fiddling with Bluetooth settings, using a wired cable, or leveraging SharePlay/Spotify Jam for music, swapping phones on CarPlay is doable. A few quick taps, a bit of patience, and you’ll be back on the road with the right device in charge.