https://devzone.nordicsemi.com/f/nordic-q-a/62731/unknown-characteristic-0x2ad3-using-nrf-connectI&#39;m working on setting up a Fitness Machine Service on our nRF52832 custom board. When I add the Training Status characteristic SIG 0x2AD3, I get Unknown Characteristic when I connect to my device via the nRF connect mobile app 2.21 build 139. I&#39;men-USTelligent Community 13Tue, 23 Jun 2020 12:08:06 GMThttps://devzone.nordicsemi.com/thread/256432?ContentTypeID=1Tue, 23 Jun 2020 12:08:06 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9bab6728-4697-4859-a0a4-937da07f7473Heidi<p>Hi, it does not look like the iOS version has this feature, unfortunately. If you use the nRF Connect for Desktop version of the app you can add your own UUID definitions, see <a href="https://infocenter.nordicsemi.com/topic/ug_nrfconnect_ble/UG/nRF_Connect_BLE/nRF_Connect_Adding_UUID_definitions.html">here</a>.</p> <p></p> <p>Best regards,</p> <p>Heidi</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/255821?ContentTypeID=1Thu, 18 Jun 2020 14:36:48 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0425e5d0-1649-4bd1-9021-0d496edbf462Ross Belloni<p>Thnaks for the very prompt response. &nbsp; I am using iOS.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/255751?ContentTypeID=1Thu, 18 Jun 2020 11:44:36 GMT137ad170-7792-4731-bb38-c0d22fbe4515:97093c29-9128-422f-8773-4d693ed6bdb4Heidi<p>Hi!</p> <p>Are you on Android or iOS?</p> <p></p> <p>The Training Status characteristic is not included in the nRF Connect app by default, so you will have to add it yourself for it to be recognized. Let me know which OS&nbsp; you are on, and I&#39;ll instruct you on how to do this.</p> <p></p> <p>Best regards,</p> <p>Heidi</p><div style="clear:both;"></div>