Can 2 bluetooth device be used at the same time for iPhone 4?

lets see if this video answerd your question! right now i have a bluetooth watch that tell me the caller id (so if i have my phone in my backpack i don't have to take it out to see who's calling) and a jabra stone headset and i can use them both at the same time!

Video: http://www.youtube.com/watch?v=Xm2uOOyKqr4&feature=player_embedded

While it's true that the very nature and definition of Bluetooth is a pairing of two devices, you can pair any single device to multiple devices and as long as you're not trying to do the same thing on two devices simultaneously you should be fine.

For example, streaming stereo audio utilizes the A2DP Bluetooth Profile while talking on a phone uses the HSP Bluetooth Profile. So you can be streaming your music to your Jabra BT530 from one device and when you get a call, it should automatically switch over to the phone device (i.e. you can't stream stereo audio while you're on a call - not only would it be difficult to hear the caller, but it defies the definition of Bluetooth).

You shouldn't have any problems listening to music through the Bluetooth FM transmitter and taking calls from your cell phone when both are paired with the Jabra BT530. I would suggest pairing the iPhone first, then the Bluetooth FM transmitter. The iPhone would try to pair using both profiles but the A2DP Profile would then be "taken" by the transmitter.

Not sure I follow all the explanations in the string here, but still have a question. I want to pair my iphone to two separate devices simultaneously. My Hyundai Santa Fe audio system is blue tooth compatible. I am successfully paired and can play itunes or radio player apps on phone through the car audio. Calls are also handle by the car audio built-in hands free. Works fine. I also have bluetooth hearing aids. I want to pair it simultaneously. That way passengers may want to turn the car audio volumne down, but I couls still turn up volume in my hearing aids and not bother them. Can iphone transmit audio to two separate audio devices simultaneously?

For more info see:

http://electronics.howstuffworks.com/bluetooth2.htm

Bluetooth can connect up to eight devices simultaneously. With all of those devices in the same 10-meter (32-foot) radius, you might think they'd interfere with one another, but it's unlikely. Bluetooth uses a technique called spread-spectrum frequency hopping that makes it rare for more than one device to be transmitting on the same frequency at the same time.

Can I stream an audio signal from the iPhone to two devices at the same time via blutooth? I am planning a blutooth audio device in the kitchen and another one in the bathroom. I would like to know if I can stream music to both of them at the same time that when I am moving from the bathroom to the kitchen I hear the same audio signal. Or do I have to switch over to the other device every time I change a room?

While you can have multiple devices PAIRED together at the same time, you can only use a PAIR of devices at the same time (i.e. your iPhone and one other device). Bluetooth, by definition, is the PAIRING of two devices. Sorry!

Hi Jeffrey,

I know this thread is old, so Im not sure if you will get this, but Im in the same boat as you. I just purchased a 2013 A3 and while it has bluetooth for calls, there is no A2DP capabilities. I want to confirm- with the Bluetrip, if you are streaming music, and a call comes in, will the iphone 4 automatically route the call to your Audi, or do you have to grab the phone and manually select the Audi as the phone call source?

This (i.e. the last question asked by kplotzker) is a very good question and I'd be eager to know the answer, too! Anyone using an aftermarket A2DP bluetooth device plus the A3's factory bluetooth? Does it switch automatically from music to phone and backwards? Many thanks in advance for your help!!

I'm using the following with great success in my Audi Q5:

http://a2dp4audi.netmagi.com/index.html

Switches back and forth as you described.