https://devzone.nordicsemi.com/f/nordic-q-a/63883/android-with-bleHi, Im biulding Demo App with Ble using Nordic Library, i want to build App kind of send Massage to phone from device BLE, and vice versa, pls theo me what to do. i connected with BLE devices.en-USTelligent Community 13Fri, 17 Jul 2020 12:26:44 GMThttps://devzone.nordicsemi.com/thread/260575?ContentTypeID=1Fri, 17 Jul 2020 12:26:44 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c838283c-9b38-4606-ab14-9fdfff7e4d85Edvin<p>Hello,</p> <p>Did you check the source code for nRF Toolbox app?</p> <p><a href="https://www.nordicsemi.com/Software-and-tools/Development-Tools/nRF-Toolbox" rel="noopener noreferrer" target="_blank">This site</a>&nbsp;contains a link to the github where the source code is located.</p> <p>In nRF Toolbox, there is a module called &quot;UART&quot;. This you can use to communicate with an nRF programmed with the ble_app_uart example. You can use this to send data back and forth.</p> <p></p> <p>Please see the example&#39;s test description:</p> <p><a href="https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.0.0/ble_sdk_app_nus_eval.html?cp=7_1_4_2_2_25_2#project_uart_nus_eval_test">https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.0.0/ble_sdk_app_nus_eval.html?cp=7_1_4_2_2_25_2#project_uart_nus_eval_test</a></p> <p></p> <p>Best regards,</p> <p>Edvin</p><div style="clear:both;"></div>