If there are no CoreBluetooth warnings showing up in syslog, then it may be an interoperability issue or a bug on the iOS side. File a bug report — the team can provide you with a profile that can be used to gather logs on the iOS device.

On Aug 18, 2015, at 4:12 AM, Sarah Abdelrazak <sarah.abdelrazak@thirdwayv.com> wrote:

@Jason, The phone logs does not show any thing. Also I can do multiple connection to the peripheral successfully. This disconnect issue can appear 2 or 3 times every 20 consecutive connection to the same peripheral.

@Nick, I’m going to check this.

Regards, Sarah

On Aug 13, 2015, at 7:39 PM, Nick Brook <nrbrook@gmail.com> wrote:

...

This can also happen if the peripheral does not respond to a read request within a timeout window.

Nick

...

On 13 Aug 2015, at 17:37, Jason Conn <conn@apple.com> wrote:

Are you retaining the CBPeripheral? Does anything show up in the console logs from the phone?

...

On Aug 13, 2015, at 7:08 AM, Sarah Abdelrazak <sarah.abdelrazak@thirdwayv.com> wrote:

I am using iPhone with iOS8 with a kit using nordic's BLE chip, and sniffing using WIRESHARK. After initiating a connection between iPhone and a BLE Nordic Kit, the iPhone terminates the connection unexpectedly by sending after a while LL_TERMINATED with Error Code "REMOTE USER TERMINATED". On the other hand, the kit's logs say that disonnection happened due to"BLE_HCI_CONNECTION_TIMEOUT ". I can not see what the problem is, taking into consideration that the connection parameters are set based on Apple's recommendation.

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