https://devzone.nordicsemi.com/f/nordic-q-a/37335/how-let-the-peripheral-open-the-peer-s-notificationHi, I am using nRF51822 now,SDK11.0, how to let the peripheral open the peer&#39;s notification, My original design uses DA14580, Android APP can receive messages when the peer doesn&#39;t open the notification , but now using nRF51822, APP can not receive theen-USTelligent Community 13Tue, 14 Aug 2018 12:49:17 GMThttps://devzone.nordicsemi.com/thread/144178?ContentTypeID=1Tue, 14 Aug 2018 12:49:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:82c60a32-629a-4a77-b13a-f0aca5226d1bhaakonsh<p>See&nbsp;<a title="sd_ble_gatts_hvx" href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s130.api.v2.0.0/group___b_l_e___g_a_t_t_s___f_u_n_c_t_i_o_n_s.html?cp=3_7_2_1_1_2_4_2_3#ga313fe43c2e93267da668572e885945db">sd_ble_gatts_hvx</a>&nbsp;documentation.&nbsp;</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/144030?ContentTypeID=1Tue, 14 Aug 2018 01:16:52 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f88acff4-240e-4111-99d4-06298b47853bneoitachi<p>nRF51822(S130) is the server,Phone is the client.I want the server to open the client&#39;s notification.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/143958?ContentTypeID=1Mon, 13 Aug 2018 12:42:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b69a8e21-9064-457e-afe9-be85582a56achaakonsh<p>What is your GAP and GATT configuration, what device is the peripheral and what device is the central, what device is the client and what device is the server?</p><div style="clear:both;"></div>