https://devzone.nordicsemi.com/f/nordic-q-a/46409/advertizing-nameHello, I am developing a BLE application using nRF51822 on SDK 12.3 and SD 2.0.1. I have an application with NUS service, in which I set the device name by sd_ble_gap_device_name_set. And the device name length is 26 bytes. Then, I added the securityen-USTelligent Community 13Wed, 24 Apr 2019 12:48:12 GMThttps://devzone.nordicsemi.com/thread/183467?ContentTypeID=1Wed, 24 Apr 2019 12:48:12 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c90f3d50-f522-4223-ad35-d6b094cd47bbJoakim Jakobsen<p>Hi.&nbsp;</p> <p>The reason for this is most likely that you don&#39;t have enough space for the entire name in the advertisement packet. You can only fit 31 bytes in a single packet.&nbsp;</p> <p>Are you adding any extra data to the advertising packet due to the addition of the security feature?</p> <p></p> <p>Best regards,&nbsp;<br />Joakim.</p><div style="clear:both;"></div>