https://devzone.nordicsemi.com/f/nordic-q-a/6481/can-we-connect-directly-to-bt-device-with-mac-id-onlyHello Everyone, Scenario is i am getting some commands from Master(Android based Mobile App) to start some function , After i get the commands i disconnect from master with this function sd_ble_gap_disconnect () and stops advertising and then i expecten-USTelligent Community 13Thu, 16 Apr 2015 10:56:17 GMThttps://devzone.nordicsemi.com/thread/22624?ContentTypeID=1Thu, 16 Apr 2015 10:56:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:70cbd5c7-1cfb-4fec-9bb3-f85b6e984e69asma<p>Yes its true...thank you shibshab</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/22623?ContentTypeID=1Mon, 13 Apr 2015 12:19:32 GMT137ad170-7792-4731-bb38-c0d22fbe4515:68c26c7f-99c5-4d6e-92a7-b350b4fbe90dshibshab<p>It is impossible to connect to a device that is not advertising, so I think that your problem is that you are still advertising after calling sd_ble_gap_disconnect.</p> <p>Calling sd_ble_gap_disconnect does not (as far as I know) ensure that advertisement is stopped.</p> <p>You need to call sd_ble_gap_adv_stop() to ensure that nothing is able to connect to your device.</p><div style="clear:both;"></div>