Device logs for bluetooth on iOS

Question

I am currently developing an iPhone app that pairs with a bluetooth device.

We are having some latency issues regarding this pairing, and detecting at the correct time when our device is paired/connected.

Do you guys know if the iPhone has some log information we can look at/extract for bluetooth devices?

Solution

Try generating a Bluetooth diagnostic log, that's the most info you will get (without jail breaking). If you need more info, a Bluetooth sniffer/protocol analyzer may be needed.

Comments

[Markus Millfjord]

You mean traces from the iOS BT-stack in some kind of verbose mode, or just timestamps from within your app to pinpoint what takes time?

[Chris Herbert]

How can you get more logs with Jailbreaking the phone?

[Brendan Shanks]

From a shell I use keychain_dumper to get link keys for BT connections, so an air sniffer can decrypt the connection. I've never done it for BLE but I assume the same thing is possible. Also you can watch the BT diagnostic logs and console log in real time (just tail -f)

[bcattle]

@Brendan Shanks When you say "bluetooth diagnostic log" do you mean the main system_logs.logarchive file, or are there more specific Bluetooth-related files?