https://devzone.nordicsemi.com/f/nordic-q-a/22689/unreliable-auto-connectionWe&#39;ve been suffering Unreliable Auto Connection for quite a while... &quot;autoConnect&quot; sometimes just doesn&#39;t work to get the device back to connection. Below is the failure message returned whenever the problem happened. Any of you have ideas? Many thanksen-USTelligent Community 13Mon, 12 Jun 2017 16:08:15 GMThttps://devzone.nordicsemi.com/thread/89203?ContentTypeID=1Mon, 12 Jun 2017 16:08:15 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d65e0aa0-d88d-455b-880f-4dd05f01874bHung Bui<p>@JonathanLin: Could you try to test with nRFConnect ?, you can enable AutoConnect in the drop down arrow when you connect. Which phone did you try? Which Android version?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/89205?ContentTypeID=1Mon, 12 Jun 2017 02:25:18 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c234499a-935d-4853-87d1-8ba9af162603Jonathan Lin<p>This happened on Android devices, and the message received was from Android OS middleware. We simple use &quot;auto connect&quot; command, and sometimes it fails with this error.</p><div style="clear:both;"></div>