https://devzone.nordicsemi.com/f/nordic-q-a/22203/sdk-v13-ble_app_uart-example-not-workingI built and downloaded the softdevice and app to the nRF52 board. Then I used nRF Connect Android app to connect to it. It seems to be connected as the LED1 is steady. But Discovery and enable service does not work. I tried the V12 and V11 SDK, they worken-USTelligent Community 13Fri, 19 May 2017 21:32:46 GMThttps://devzone.nordicsemi.com/thread/87267?ContentTypeID=1Fri, 19 May 2017 21:32:46 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ab1da262-44c6-46c3-a2e1-7d1160048e4aDaniel Wang<p>See this answer: <a href="https://devzone.nordicsemi.com/question/136600/can-not-connect-to-devices-with-sdk-13-from-android-444/?answer=137571#post-id-137571">devzone.nordicsemi.com/.../</a></p><div style="clear:both;"></div>