I have Service UUID and its only two characteristics UUID which is Tx (App to BLE) and Rx(BLE device to APP) on iOS App. Unable to get Data from command.https://devzone.nordicsemi.com/f/nordic-q-a/24971/i-have-service-uuid-and-its-only-two-characteristics-uuid-which-is-tx-app-to-ble-and-rx-ble-device-to-app-on-ios-app-unable-to-get-data-from-commandI have one Service UUID and its only two characteristics UUID which is Tx (App to BLE) and Rx(BLE device to APP) to get different type of data e.g. Heart rate, Sleep data, motion data etc. . Unable to get Data from command. Protocol identification marken-USTelligent Community 13Sun, 10 Sep 2017 11:04:35 GMTRE: I have Service UUID and its only two characteristics UUID which is Tx (App to BLE) and Rx(BLE device to APP) on iOS App. Unable to get Data from command.https://devzone.nordicsemi.com/thread/98334?ContentTypeID=1Sun, 10 Sep 2017 11:04:35 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c2abe036-933e-4c1d-949a-4315694dbdf0Petter Myhre<p>I don&#39;t understand. Are you still trying to read? It is not supported. It must be notified. Do you understand?</p><div style="clear:both;"></div>RE: I have Service UUID and its only two characteristics UUID which is Tx (App to BLE) and Rx(BLE device to APP) on iOS App. Unable to get Data from command.https://devzone.nordicsemi.com/thread/98333?ContentTypeID=1Thu, 07 Sep 2017 14:21:38 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9995b902-5aab-4d20-b934-b448d0c081a5Abhay Singh Naurang<p>@Petter Myhre , I have updated question it may helpful to you understand. And Multiple command as Heart rate given for example sleep data request 0x22 and sleep data returned 0x23 etc. using only to characteristic UUIDs.</p><div style="clear:both;"></div>RE: I have Service UUID and its only two characteristics UUID which is Tx (App to BLE) and Rx(BLE device to APP) on iOS App. Unable to get Data from command.https://devzone.nordicsemi.com/thread/98332?ContentTypeID=1Thu, 07 Sep 2017 13:49:30 GMT137ad170-7792-4731-bb38-c0d22fbe4515:57ae658f-e426-46c6-b36a-9fbbcce18352Petter Myhre<p>According to the Heart Rate Service specification the heart rate measurement characteristic should not support read, but only notifiy. See <a href="https://www.bluetooth.com/specifications/gatt/viewer?attributeXmlFile=org.bluetooth.service.heart_rate.xml">this</a>.</p><div style="clear:both;"></div>RE: I have Service UUID and its only two characteristics UUID which is Tx (App to BLE) and Rx(BLE device to APP) on iOS App. Unable to get Data from command.https://devzone.nordicsemi.com/thread/98331?ContentTypeID=1Thu, 07 Sep 2017 13:38:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6162749e-a3cf-4990-9257-b3bd948bc88fAbhay Singh Naurang<p>I have actually tested my BLE device with nRF Connect and Its connect and discover one service UUID and it&#39;s characteristic UUIDs one is write and write without response UUID and other is notify UUID. I am unable to understand how i&#39;ll read heart rate data from these UUIDs.</p><div style="clear:both;"></div>RE: I have Service UUID and its only two characteristics UUID which is Tx (App to BLE) and Rx(BLE device to APP) on iOS App. Unable to get Data from command.https://devzone.nordicsemi.com/thread/98330?ContentTypeID=1Thu, 07 Sep 2017 10:45:25 GMT137ad170-7792-4731-bb38-c0d22fbe4515:263df745-a52c-4a86-a757-5b04e033a8bePetter Myhre<p>Could you explain a bit more? What app are you using on iOS? Have you tested with other centrals? Windows? Android? Are you using an example from our SDK? Which? Have you modified it? Which version of our SDK are you using? What hardware? nRF51? nRF52?</p><div style="clear:both;"></div>