https://devzone.nordicsemi.com/f/nordic-q-a/23951/nus-service-not-shown-upWith our custom board, I have implemented the battery service and it&#39;s working well. But the nus service is not shown up at all, the same initialization code as the official example happen in ble_bas_wrap.c and ble_nus_wrap.c as follows: void ble_bas_wrap_initen-USTelligent Community 13Tue, 01 Aug 2017 11:43:55 GMThttps://devzone.nordicsemi.com/thread/94297?ContentTypeID=1Tue, 01 Aug 2017 11:43:55 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b8ba2a00-2613-4360-9f0d-84137305695cm.li-10<p>Thanks for your suggestion, actually I forgot to change the variable of custom UUIDS number. Problem solved, Thx!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/94296?ContentTypeID=1Tue, 01 Aug 2017 02:13:40 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5b5bf396-d733-4541-898a-11209b6d51bdRoger Clark<p>Take a look at the actual advertising data. e.g. there is a free iOS App called &quot;BLE Scanner&quot; (also known as Pally BLE Scanner&quot;</p> <p>I suspect that the NUS (128 bit) service is not in the advertising data.</p> <p>BTW do you include a name or manufacturer data in the advertsing, as its possible there isnt enough space to send a 16bit and a 128bit services list as well as a long string for the name</p><div style="clear:both;"></div>