https://devzone.nordicsemi.com/f/nordic-q-a/14452/how-to-receive-data-through-nusI&#39;ve been working on a project, which requires data transmitted through ble to cell phone app. The user could acquire the data from the sensor when he sends a specific string using cell phone app to the device through ble. I&#39;ve been reading the exampleen-USTelligent Community 13Mon, 13 Jun 2016 07:59:49 GMThttps://devzone.nordicsemi.com/thread/55207?ContentTypeID=1Mon, 13 Jun 2016 07:59:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1316bbc1-63b5-4b1d-ab23-efa594af6cdaRichieJH<p>Lot&#39;s of information in the forums on this by searching for NUS. This question has been asked so many times.</p> <p>As to your second question, are you asking the relationship between Bluetooth Low Energy and a UART? Or do you mean NUS and UART? NUS is Nordic&#39;s radio (via Bluetooth Low Energy) equivalent of a UART which normally is via wired connection.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/55206?ContentTypeID=1Mon, 13 Jun 2016 07:55:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:fb1c0ad0-3526-4273-adc5-ad6d15375f73shanky<p>you need to add ble_nus service for reference check this example <a href="https://github.com/NordicSemiconductor/nrf51-UART-examples/blob/master/app_uart_library_example_with_ble/main.c">link text</a></p><div style="clear:both;"></div>