https://devzone.nordicsemi.com/f/nordic-q-a/26487/bonding-request-on-connectI&#39;ve got a little confused about variety of peer/bonding/whitelist abstractions realized in NRF5 SDK. My goal is to maintain longterm connections (nrf52832 peripheral + smartphone central) only with bonded devices. I&#39;ve successfully protected my BLE characteristicsen-USTelligent Community 13Thu, 02 Nov 2017 21:16:19 GMThttps://devzone.nordicsemi.com/thread/104230?ContentTypeID=1Thu, 02 Nov 2017 21:16:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:04c87ff5-52c3-4e10-a3b5-cf593db21d60Sigurd<p>Hi,</p> <p>The timeout is 30 sec, and should generate a <code>PM_EVT_CONN_SEC_FAILED</code> event, the nRF5x should disconnect after that, and advertising is restarted. Passkey promt should appear the first time you try to connect.</p> <p>Peer Manager with Passkey is implemented in the <em>ble_app_gls</em> example in the SDK. You should test with that, and see if you have the same issue with that example with your Android phones. It works fine here with a Samsung S6 running Android v7.</p><div style="clear:both;"></div>