All, here's a run down on different options how to connect the Galaxy S3 Dock to car-stereo speakers for playing music and sound from all Apps.
First, the Bluetooth options. Please note that when using any Bluetooth hands-free device (
headset, portable, built-in from car-manufacturer etc) with the Galaxy S3 you can choose if the connected device is to be used for phone calls only, for audio streaming or both. This depending on which Bluetooth profile your device is using. See attached screen shot for an example from a Bluetooth U-connect system used in Chrysler cars.
Cars with A2DP Bluetooth systems:
If your car is equipped with a Bluetooth hands-free system
it may allow you to to stream audio, in addition to hands-free functionality but only if the system has an embedded A2DP (Advance Audio Distribution Profile) profile in the BT chipset. If it does have A2DP profile you will have the option during the pairing process to select the "Media Audio", in addition to the "Call Audio" button. If this is the case, the Aux-cable that's included with the Dock will not be used as Audio Streaming over Bluetooth is the preferred choice if your system is set up for it. In this scenario, simply hide the aux-out cable end or tuck in under the car seat or center console.
Cars with hands-free only systems (very common):
If your car-stereo does NOT allow you to choose the "Media Audio" this means that your system is designed with the so called "Hands-free Profile", thus it is only able to be used for hands-free calling. For this scenario the aux-out cable from the iBOLT Dock should be plugged in to the 3.5 mm aux-in on the car-stereo, center console or in-between the front seats (wherever located). When you play music (or GPS Navigation sound) from your Dock to the car-stereo speakers and a phone call is made the Aux sound will automatically mute and start again once the phone call has ended.
Cars with no BT system but cassette player:
If your car does NOT have a 3.5 mm aux-in jack but features a cassette player there's plenty of "cassette-to-3.5 aux" options to buy. Search at your preferred electronic retailer for the solution that is right for you. Once inserted the iBOLT Dock can be used for playing music through the car stereo as if played through the cassette player.
Cars with no BT system and CD only:
For cars that has neither 3.5 mm Aux-in, nor a cassette player there's some FM transmitters that features a 3.5 mm aux-in, allowing a way of connecting the Dock to the car stereo. We have very limited knowledge of this option as it has not been tested by us but theoretically it should work.
There's more options and more variables but the above should provide a basic run-down. As there's so many very knowledgeable users on this forum, clarifications or comments are appreciated. Connecting the phone's music to the car-stereo is something of high interest to a lot of people. It almost requires a dedicated thread...
Finally, we strongly recommend connecting the Galaxy S3 phone to a Bluetooth device for hands-free calling, regardless which option (if any) is used to connect to the car-stereo for listening to music. To use the S III phone as a "speaker phone" while in the Dock works fine with regards to the driver hearing the other party. However, the party on the other end often hear an echo, a lot of background noise, the driver sound "faint-far away" or they sound like "in a tunnel". This is because virtually no Smartphone features a dedicated DSP (Digital Signal Processor) chip for cancelling background noise and echo. Smartphone do not have full duplex either when in speaker mode, which essentially means the microphone is at least partially shut down while the other party speaks. The conversation is therefore similar to "walkie-talkie", where only one party speaks at a time. Summary: connect your S III phone to a Bluetooth device from a respected brand manufacturer unless you're holding the phone to the ear...
