diff --git a/i18n/en-US.json b/i18n/en-US.json
index 7093c46..cbe4941 100644
--- a/i18n/en-US.json
+++ b/i18n/en-US.json
@@ -213,6 +213,13 @@
 				"unregisterNotifications": {
 					"label": "Notify when unregistered",
 					"help": "Do you want to notify the administrator each time this device unregisters?"
+				},
+				"__comment": "UI-1917: Add button to unlock device on SmartPBX app",
+				"__version": "3.22",
+				"unlock": {
+					"label": "Allow Reprovision",
+					"button": "Unlock",
+					"success": "This device is unlocked for the next 24 hours"
 				}
 			},
 			"restrictions": {
diff --git a/i18n/fr-FR.json b/i18n/fr-FR.json
index 65f3616..dc65014 100644
--- a/i18n/fr-FR.json
+++ b/i18n/fr-FR.json
@@ -173,6 +173,12 @@
 					"button": "Redémarrer",
 					"help": "Ce bouton envoie une requête de redémarrage. Cette action n'est disponible que pour les appareils qui sont actuellement connectés à la plateforme.",
 					"success": "Vous avez envoyé une requête de redémarrage avec succès!"
+				},
+
+				"unlock": {
+					"label": "Autoriser la mise à jour",
+					"button": "Déverrouiller",
+					"success": "Ce téléphone est déverrouillé pour les prochaines 24 heures"
 				}
 			},
 			"restrictions": {
diff --git a/submodules/devices/devices.js b/submodules/devices/devices.js
index 632d4f0..bf568c3 100644
--- a/submodules/devices/devices.js
+++ b/submodules/devices/devices.js
@@ -12,6 +12,11 @@ define(function(require){
 				'url': 'ui/{brand}/{family}/{model}',
 				'verb': 'GET',
 				generateError: false
+			},
+			'provisioner.devices.unlock': {
+				'apiRoot': monster.config.api.provisioner,
+				'url': 'locks/{accountId}/{macAddress}',
+				'verb': 'DELETE'
 			}
 		},
 
@@ -269,6 +274,7 @@ define(function(require){
 				type = data.device_type,
 				popupTitle = mode === 'edit' ? monster.template(self, '!' + self.i18n.active().devices[type].editTitle, { name: data.name }) : self.i18n.active().devices[type].addTitle,
 				templateDevice = $(monster.template(self, 'devices-'+type, $.extend(true, {}, data, {
+					isProvisionerConfigured: monster.config.api.hasOwnProperty('provisioner'),
 					showEmergencyCnam: monster.util.isNumberFeatureEnabled('cnam') && monster.util.isNumberFeatureEnabled('e911')
 				}))),
 				deviceForm = templateDevice.find('#form_device');
@@ -378,6 +384,12 @@ define(function(require){
 				}
 			});
 
+			templateDevice.find('#unlock_device').on('click', function() {
+				self.devicesUnlock(data.mac_address.replace(/\:/g, ''), function() {
+					toastr.success(self.i18n.active().devices.popupSettings.miscellaneous.unlock.success);
+				});
+			});
+
 			templateDevice.find('.actions .save').on('click', function() {
 				if(monster.ui.valid(deviceForm)) {
 					templateDevice.find('.feature-key-value:not(.active)').remove();
@@ -528,6 +540,21 @@ define(function(require){
 			});
 		},
 
+		devicesUnlock: function(macAddress, callback) {
+			var self = this;
+
+			monster.request({
+				resource: 'provisioner.devices.unlock',
+				data: {
+					accountId: self.accountId,
+					macAddress: macAddress
+				},
+				success: function(data, status) {
+					callback && callback();
+				}
+			});
+		},
+
 		devicesMergeData: function(originalData, template, audioCodecs, videoCodecs) {
 			var self = this,
 				hasCodecs = $.inArray(originalData.device_type, ['sip_device', 'landline', 'fax', 'ata', 'softphone', 'smartphone', 'mobile', 'sip_uri']) > -1,
diff --git a/views/devices-sip_device.html b/views/devices-sip_device.html
index f39d78e..a22e56c 100644
--- a/views/devices-sip_device.html
+++ b/views/devices-sip_device.html
@@ -249,6 +249,17 @@
 							<i class="help-popover fa fa-question-circle" data-original-title="{{ i18n.devices.popupSettings.miscellaneous.restart.help }}" data-placement="top" data-toggle="tooltip"></i>
 						</div>
 					</div>
+
+					{{#if isProvisionerConfigured}}
+					<div class="control-group">
+						<label class="control-label checkbox">{{ i18n.devices.popupSettings.miscellaneous.unlock.label }}</label>
+						<div class="controls">
+							<button id="unlock_device" type="button" class="monster-button-primary">
+								{{ i18n.devices.popupSettings.miscellaneous.unlock.button }}
+							</button>
+						</div>
+					</div>
+					{{/if}}
 				{{/if}}
 			</div>