https://devzone.nordicsemi.com/f/nordic-q-a/49000/can-i-use-phone-alert-status-pass-to-know-incoming-call-on-androidhi can I use Phone Alert Status ( PASS ) to know incoming call on android ? and have any Phone Alert Status ( PASS ) example ? thanksen-USTelligent Community 13Wed, 26 Jun 2019 11:15:24 GMThttps://devzone.nordicsemi.com/thread/194848?ContentTypeID=1Wed, 26 Jun 2019 11:15:24 GMT137ad170-7792-4731-bb38-c0d22fbe4515:855bf3f3-68d3-4de8-9456-3ad962d8422bhaakonsh<p>From&nbsp;<a href="https://www.bluetooth.com/specifications/gatt/services/">https://www.bluetooth.com/specifications/gatt/services/</a>:&nbsp;<a href="https://www.bluetooth.com/wp-content/uploads/Sitecore-Media-Library/Gatt/Xml/Services/org.bluetooth.service.phone_alert_status.xml" rel="noopener noreferrer" target="_blank">Phone Alert Status Service</a>&nbsp;it seems that it is up to the connected client (Android) to write to the Alert Status characteristic (<span>Ringer State</span><span>,&nbsp;</span><span>Vibrator State,</span><span>&nbsp;Display Alert State) on the server (whatever device you&#39;re envisioning).&nbsp;&nbsp;There is no mention of what can&nbsp;these Alert States represents, so they can represent an incoming phone call if you want it to.&nbsp;<br /><br />Maybe Android has an implementation of this service already, I do not know. If it does not then you need to create an app that listens for whatever event that indicates an incoming call and write to the&nbsp;Alert Status characteristic&nbsp;of your device.&nbsp;</span></p><div style="clear:both;"></div>