https://devzone.nordicsemi.com/f/nordic-q-a/11992/why-scan-by-nrf-uart-can-not-find-bluetooth-device-in-some-android-phoneWhen I use nRF UART of android phone A and B to scan the bluetooth device, the scan result is below: first picture is the result of phone A, second is phone B: first one: second one: why phone A cannot scan bluetooth device which addressen-USTelligent Community 13Fri, 19 Feb 2016 12:05:05 GMThttps://devzone.nordicsemi.com/thread/45393?ContentTypeID=1Fri, 19 Feb 2016 12:05:05 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e79f98a9-ee37-4140-932e-0061a79fb916Vidar Berg<p><a href="https://play.google.com/store/apps/details?id=no.nordicsemi.android.nrftoolbox&amp;hl=no">link to nrftoolbox app</a></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/45392?ContentTypeID=1Fri, 19 Feb 2016 12:00:31 GMT137ad170-7792-4731-bb38-c0d22fbe4515:913c74a7-e217-4b77-895e-2b10c8c63b19qoboty<p>I use phone B, I can scan the bluetooth device that I expect, howerer, phone A can not scan out the bluetooth device the one labeled</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/45391?ContentTypeID=1Fri, 19 Feb 2016 11:54:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9a255407-0e5d-4f81-b6e6-c23584222637Vidar Berg<p>Please try the UART application found in the nrftoolbox container app and see if you get the same result.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/45390?ContentTypeID=1Fri, 19 Feb 2016 11:52:06 GMT137ad170-7792-4731-bb38-c0d22fbe4515:642cad91-0659-4860-8db1-df4a565f71beqoboty<p>yes，phone B is android 4.4.4 and phone A is 4.4.3</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/45389?ContentTypeID=1Fri, 19 Feb 2016 11:48:37 GMT137ad170-7792-4731-bb38-c0d22fbe4515:135e75d2-9dcb-4d22-93db-b7f476d3fe10Vidar Berg<p>Do both phones have Android version 4.3 or later installed?</p><div style="clear:both;"></div>