diff --git a/calendar/inc/class.calendar_uiforms.inc.php b/calendar/inc/class.calendar_uiforms.inc.php
index e207b8192a..b39750f21a 100644
--- a/calendar/inc/class.calendar_uiforms.inc.php
+++ b/calendar/inc/class.calendar_uiforms.inc.php
@@ -1962,7 +1962,13 @@ class calendar_uiforms extends calendar_ui
 		if (!empty($preserved['lock_token'])) $content['lock_token'] = $preserved['lock_token'];
 
 		//Disable videoconference if the module is not enabled
-		$etpl->disableElement('videoconference', calendar_hooks::isVideoconferenceDisabled());
+		$etpl->disableElement('videoconference', $video_disabled=calendar_hooks::isVideoconferenceDisabled());
+
+		// disable mobile Join Videoconference button, if not available or enabled
+		if ($video_disabled || empty($content['id']) || empty($content['##videoconference']))
+		{
+			$readonlys['button[videoconference]'] = true;
+		}
 
 		$content['future_exceptions'] = !empty($content['id']) && !empty($content['recur_type']) &&
 			$this->bo->search(['start' => Api\DateTime::to('now', 'ts')], 'cal_reference='.(int)$content['id']);
diff --git a/calendar/inc/class.calendar_uilist.inc.php b/calendar/inc/class.calendar_uilist.inc.php
index 4ab90c4cf5..b883723f0b 100644
--- a/calendar/inc/class.calendar_uilist.inc.php
+++ b/calendar/inc/class.calendar_uilist.inc.php
@@ -999,7 +999,7 @@ class calendar_uilist extends calendar_ui
 		{
 			Api\Translation::add_app('status');
 			$actions['videoconference'] = [
-				'icon' => 'status/videoconference',
+				'icon' => 'camera-video',
 				'caption' => 'Video Conference',
 				'group' => $group,
 				'allowOnMultiple' => false,
@@ -1008,14 +1008,14 @@ class calendar_uilist extends calendar_ui
 				'children' => [
 					'join' => [
 						'caption' => 'Join',
-						'icon' => 'status/videoconference_join',
+						'icon' => 'camera-video',
 						'onExecute' => 'javaScript:app.calendar.videoConferenceAction',
 						'enabled' => !calendar_hooks::isVideoconferenceDisabled(),
 						'allowOnMultiple' => false,
 					],
 					'recordings' => [
 						'caption' => 'Recordings',
-						'icon' => 'status/videoconference_recordings',
+						'icon' => 'record-btn',
 						'onExecute' => 'javaScript:app.calendar.videoConferenceAction',
 						'enabled' => !calendar_hooks::isVideoconferenceDisabled()
 							|| calendar_hooks::isVCRecordingSupported(),
diff --git a/calendar/js/app.ts b/calendar/js/app.ts
index 612a755d73..8f78811a15 100644
--- a/calendar/js/app.ts
+++ b/calendar/js/app.ts
@@ -4386,7 +4386,7 @@ export class CalendarApp extends EgwApp
 					if (_value)
 					{
 						if (_value.err) egw.message(_value.err, 'error');
-						if(_value.url) egw.top.app.status.openCall(_value.url);
+						if(_value.url) egw.callFunc('app.status.openCall', _value.url);
 					}
 			}).sendRequest();
 	}
diff --git a/calendar/templates/mobile/edit.xet b/calendar/templates/mobile/edit.xet
index ae0c2cf300..7ead94e546 100644
--- a/calendar/templates/mobile/edit.xet
+++ b/calendar/templates/mobile/edit.xet
@@ -195,6 +195,8 @@
 						<et2-button-icon  statustext="Find free timeslots where the selected participants are available for the given timespan"
 							id="freetime" label="Freetime" onclick="app.calendar.freetime_search" image="clock-history" noSubmit="true"></et2-button-icon>
                         <et2-button-toggle label="notifications" id="no_notifications" class="notification_check" onIcon="bell-fill" offIcon="bell-slash"/>
+						<et2-button-icon id="button[videoconference]" image="status/videoconference" noSubmit="true"
+							onclick="app.calendar.joinVideoConference.call(window, '$cont[##videoconference]', this.getArrayMgr('content').data)"></et2-button-icon>
                         <et2-textbox type="hidden" id="delete_exceptions"></et2-textbox>
 					</et2-hbox>
 				</row>
diff --git a/calendar/templates/mobile/view.xet b/calendar/templates/mobile/view.xet
index daa706e038..b828f29590 100644
--- a/calendar/templates/mobile/view.xet
+++ b/calendar/templates/mobile/view.xet
@@ -4,9 +4,8 @@ Egroupware
 @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
 @package
 @subpackage
-@link http://www.egroupware.org
+@link https://www.egroupware.org
 @author Nathan Gray
-@version $Id$
 -->
 
 <!DOCTYPE overlay PUBLIC "-//EGroupware GmbH//eTemplate 2.0//EN" "https://www.egroupware.org/etemplate2.0.dtd">
@@ -21,7 +20,7 @@ Egroupware
 			<rows>
 				<row class="view_row">
 					<calendar-timegrid id="${row}"
-						onchange="var state = {}; if(widget.options.start_date == widget.options.end_date) state.view = 'day'; app.calendar.update_state(state);let s = widget.getInstanceManager().app_obj.calendar.state;let d = new Date(s.date);import(egw.link('/api/js/etemplate/lib/date.js')).then((m)=>{widget.getInstanceManager().widgetContainer.getWidgetById('header_dateIndicator').set_value((s.view == 'day'?date('d', d)+'-':'')+egw.lang(date('M',d))+'-'+date('Y',d));});"
+						onchange="var state = {}; if(widget.options.start_date == widget.options.end_date) state.view = 'day'; app.calendar.update_state(state);let s = widget.getInstanceManager().app_obj.calendar.state;let d = new Date(s.date); import(egw.link('/api/js/etemplate/lib/date.js')).then((m)=>{const date=m.date; widget.getInstanceManager().widgetContainer.getWidgetById('header_dateIndicator').set_value((s.view == 'day'?date('d', d)+'-':'')+egw.lang(date('M',d))+'-'+date('Y',d));});"
 						onevent_change="app.calendar.event_change"
 					>
 					</calendar-timegrid>