https://devzone.nordicsemi.com/f/nordic-q-a/92263/nrf5340-test-caseHI, We are working on nRF5340DK need testing procedure for direction finding (AOA, AOD). So far we have tried to Download and install nRF connect Application for Mobile (Redmi 11 pro plus supporting BT 5.2 &amp; VIVO Y20g supporting BT 5.0)and testeden-USTelligent Community 13Mon, 26 Sep 2022 10:22:57 GMThttps://devzone.nordicsemi.com/thread/387865?ContentTypeID=1Mon, 26 Sep 2022 10:22:57 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9bbe992d-0364-4eaa-86f2-e58109d2e7b4Simonr<p>Hi</p> <p><span>I&#39;m not aware of any phones supporting Direction Finding over BLE as of yet, and it does not seem to be supported in the Android or iOS&nbsp;operating systems either I&#39;m afraid, and for testing you&#39;ll need an antenna array for the RX side like the</span><a href="https://www.insightsip.com/products/bluetooth-smart-modules/isp1907"><span>&nbsp;</span>AoA Demo kit from Insight SiP</a><span>&nbsp;(our antenna array design), or&nbsp;</span><a href="https://www.u-blox.com/en/press-releases/u-blox-presents-bluetooth-aoa-explorer-kits-high-precision-indoor-positioning">U-Blox AoA kits</a><span>.&nbsp;</span></p> <p><span>The error returned from &quot;start scanning&quot; is an I/O error (input/output error) that can be seen when an antenna array is not connected to the RX board.</span></p> <p><span>Also, I see that you have created multiple tickets on the same topic. Please stick to one DevZone ticket per topic in the future.</span></p> <p><span>Best regards,</span></p> <p><span>Simon</span></p><div style="clear:both;"></div>