https://devzone.nordicsemi.com/f/nordic-q-a/39222/writing-to-an-attribute-without-a-server-connectionGood afternoon, I have a question regarding the ble_app_hrs_rscs_relay example. I am using this example to read scan response data from a peripheral without pairing with it. I am parsing the data and would like to send it to a cell phone that connectsen-USTelligent Community 13Mon, 08 Oct 2018 11:53:14 GMThttps://devzone.nordicsemi.com/thread/152036?ContentTypeID=1Mon, 08 Oct 2018 11:53:14 GMT137ad170-7792-4731-bb38-c0d22fbe4515:474a83a6-e403-4d84-8769-5c3602d1b968Hung Bui<p>Hi Gianfranco,</p> <p>Yes, you can do scan request to other sensors to collect data and then send data to the phone via a connection.&nbsp;</p> <p>When you send data to the phone in a connection, the easiest way is to call&nbsp;<span>sd_ble_gatts_hvx() as you mentioned. This function will send a notification to the phone and the phone then can display/store the data on the app.&nbsp;</span></p> <p><span>But the&nbsp;conn_handle you need to provide to the function is not the connection to the sensor but the connection handle to the phone. And you should have a valid conn_handle to the phone to be able to send the notification. Make sure you enable notification on the phone prior to that.&nbsp;</span></p> <p>I would suggest you to study the ble_app_hrs example in the SDK where it send notification to the phone using the *_hvx function. The ble_app_uart example is also useful.&nbsp;</p> <p>Note that you would need to find a way in your relay application to tell the app on the phone the data was from which sensor. Maybe by using one extra byte in the notification payload.&nbsp;&nbsp;</p><div style="clear:both;"></div>