https://devzone.nordicsemi.com/f/nordic-q-a/49752/ble-pairing-failure-if-fast-enough-critical-security-flowHallo everybody, I successfully implemented on the NUS example the Pairing with the Passkey with the following Peer Manager configuration without LESC. and the BLE EVENT: Apparently everything works fine as long as in the Mobile APP (BluePunchen-USTelligent Community 13Tue, 16 Jul 2019 13:09:59 GMThttps://devzone.nordicsemi.com/thread/198734?ContentTypeID=1Tue, 16 Jul 2019 13:09:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0ccbf7f9-2a7a-496e-9a1e-d20a5183609dJared<p>Hi,</p> <p>Exactly which characteristics are you trying to read/write when you tested the GLS example?</p> <p>regards</p> <p>Jared&nbsp;</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/198288?ContentTypeID=1Sun, 14 Jul 2019 20:50:29 GMT137ad170-7792-4731-bb38-c0d22fbe4515:55ace02b-d02c-463b-b186-5e19fb53421eduo<p>I tested also the Glucose Meter service Sample Application which is a fully features example and the problem is there too.</p> <p></p> <p>If you try to use an iOS device the device disconnect from central correctly.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/198280?ContentTypeID=1Sun, 14 Jul 2019 15:52:03 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d2854618-7234-4a1e-a44b-39bad4d735a2RoyCreemers<p>Did you configure the characteristic to require encryption/authentication?</p><div style="clear:both;"></div>