What exactly can CoreBluetooth applications do whilst in the background?

Question

The subject says it all, really. Documentation, insofar as it exists at all, suggests that apps written against the CoreBluetooth framework running on iOS devices can add \"

Answer 1

In addition to Chris's answer:

• If your app has "bluetooth-central" background mode and is connected to a peripheral, you can receive notifications (peripheral:didUpdateValueForCharacteristic:error:) from the peripheral in background, even after 10minutes.

So when you want to continuously run in background you have 2 options:

• Run the "connect, disconnect, scan again" loop
• Make the peripheral send notifications

Later should be the "Event backgrounding" from WWDC 2012 Core Bluetooth videos https://developer.apple.com/videos/wwdc/2012/ But the former looks like a hack, I don't want to rely on it.

I tested this on iPhone5, iOS6.1.4

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Apple finally released the Core Bluetooth Programming Guide and here's the official note about

Core Bluetooth Background Processing for iOS Apps