https://devzone.nordicsemi.com/f/nordic-q-a/44262/nrf52840dk-ble-with-android-will-not-connect-after-the-first-pairingHello, I have read multiple postings on this problem about how you have to &quot;forget&quot; the MCU on your android to reconnect through Bluetooth. This does not fix the problem at hand as I believe this to be a C code software problem. I am using a Samsung Galaxyen-USTelligent Community 13Fri, 01 Mar 2019 16:08:32 GMThttps://devzone.nordicsemi.com/thread/173760?ContentTypeID=1Fri, 01 Mar 2019 16:08:32 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e27bc4c0-2cdb-45b9-8df6-1687aa3cf1f7Marjeris Romero<p>Hi,</p> <p>Are you having the same problem with every example? What version of the nRF Connect app are you using? Could you attach the log output on both the phone side and the nRF?</p> <p>Make sure you have erased old bonds on each side. In the nRF side, run &quot;nrfjprog --eraseall&quot; and on the phone side &quot;Delete bond information&quot; on the nRF Connect app.</p> <p>Best Regards,</p> <p>Marjeris</p><div style="clear:both;"></div>