Bluetooth is a really helpful technology that offers you the ability to wirelessly connect devices to your iPhone. Whether you need a keyboard to make it easier to type, or you want to be able to listen to your music without disturbing people in your office, there are Bluetooth devices to solve your problem.
But what if you want to connect your Bluetooth keyboard to your iPhone so you can type a long email, but you are already listening to music through your Spotify account? Fortunately you can connect a keyboard and a pair of headphones to your iPhone at the same time, allowing you to use two Bluetooth devices at the same time.
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If you are attempting to connect two devices at the same time and are having trouble, then try connecting them in a different order. For example, I was having difficulty connecting my headphones and keyboard at the same time. But when I connected the keyboard first, then connected the headphones, everything worked properly.
Apple actually states that Bluetooth can support up to 7 simultaneously connected devices, but that 3 or 4 is a practical limit. You can read more about it here.
In my experience with testing simultaneous Bluetooth devices with the iPhone 5 in iOS 7, I was only able to output audio to one pair of Bluetooth headphones at one time. Both could be connected at the same time, as in the image below, but the iPhone would only output Bluetooth audio to one pair of headphones at one time.
I thought that this might simply be an issue of Bluetooth audio only being able to output audio to one device, but the same result occurred when a wired pair of headphones and a Bluetooth pair were connected at the same time. So it seems that the iPhone can only output audio to one device at one time. The only solution to listen to audio on multiple headphones would be to use a headphone splitter, like this one on Amazon. You could also use a Bluetooth headphone splitter like this Kokkia branded one from Amazon (if you have an iPhone with a 30-pin connector), or this other Kokkia model on Amazon that connects to the 3.5mm jack on your iPhone, for iPhone models without a 30-pin connection.
The Bluetooth headphones that I was trying to pair were this pair from Sony (click to view on Amazon) and this pair from Rocketfish (click to view on Amazon). The Bluetooth keyboard is this model from Logitech (click to view on Amazon).
You can learn more about pairing Bluetooth headphones with an iPhone here.
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