https://devzone.nordicsemi.com/f/nordic-q-a/15588/service-change-indicationHi, I&#39;m trying to add second service on the fly, while SD running. After adding it, I&#39;m trying to send service changed notification, but it don&#39;t work. Below is code used. err_code = sd_ble_gatts_service_changed(m_cpt.conn_handle, 0x000C, 0xFFFFen-USTelligent Community 13Mon, 08 Aug 2016 08:59:38 GMThttps://devzone.nordicsemi.com/thread/59473?ContentTypeID=1Mon, 08 Aug 2016 08:59:38 GMT137ad170-7792-4731-bb38-c0d22fbe4515:34ca9349-8763-45d3-86fc-072b59449063Hung Bui<p>Hi Wizath,</p> <p>I don&#39;t think the app would be aware of the indication on the service changed characteristic. If you can use <a href="https://www.nordicsemi.com/eng/Products/Bluetooth-Smart-Bluetooth-low-energy/nRF-Sniffer/">a sniffer trace</a> to capture packets over the air it would be clearer.</p> <p>Could you explain with more detail what was &quot;it doesn&#39;t work&quot;. Do you see the service discovery is performed (new service is discovered) after a reconnection ?</p><div style="clear:both;"></div>