diff --git a/src/mobile-main.js b/src/mobile-main.js
index 11477f47..794721ab 100644
--- a/src/mobile-main.js
+++ b/src/mobile-main.js
@@ -31,7 +31,35 @@ Vue.prototype.$setLanguage = function (locale) {
     axios.defaults.headers.common['Accept-Language'] = locale;
     document.querySelector('html').setAttribute('lang', locale);
     return locale;
-}
+};
+Vue.prototype.$alert = function (message, confirmCallback) {
+    this.$f7.dialog.create({
+        title: i18n.t('global.app.title'),
+        text: i18n.t(message),
+        buttons: [
+            {
+                text: i18n.t('OK'),
+                onClick: confirmCallback
+            }
+        ]
+    }).open();
+};
+Vue.prototype.$confirm = function (message, confirmCallback, cancelCallback) {
+    this.$f7.dialog.create({
+        title: i18n.t('global.app.title'),
+        text: i18n.t(message),
+        buttons: [
+            {
+                text: i18n.t('Cancel'),
+                onClick: cancelCallback
+            },
+            {
+                text: i18n.t('OK'),
+                onClick: confirmCallback
+            }
+        ]
+    }).open();
+};
 Vue.prototype.$services = services;
 Vue.prototype.$user = userstate;
 
diff --git a/src/views/mobile/Login.vue b/src/views/mobile/Login.vue
index e7c2b5ef..36f85a93 100644
--- a/src/views/mobile/Login.vue
+++ b/src/views/mobile/Login.vue
@@ -110,12 +110,12 @@ export default {
             const router = self.$f7router;
 
             if (!this.username) {
-                app.dialog.alert(self.$i18n.t('Please input username'));
+                self.$alert('Please input username');
                 return;
             }
 
             if (!this.password) {
-                app.dialog.alert(self.$i18n.t('Please input password'));
+                self.$alert('Please input password');
                 return;
             }
 
@@ -141,7 +141,7 @@ export default {
                 const data = response.data;
 
                 if (!data || !data.success || !data.result || !data.result.token) {
-                    app.dialog.alert(self.$i18n.t('Unable to login'));
+                    self.$alert('Unable to login');
                     return;
                 }
 
@@ -158,9 +158,9 @@ export default {
                 self.$f7.preloader.hide();
 
                 if (error.response && error.response.data && error.response.data.errorMessage) {
-                    app.dialog.alert(self.$i18n.t(`error.${error.response.data.errorMessage}`));
+                    self.$alert(`error.${error.response.data.errorMessage}`);
                 } else {
-                    app.dialog.alert(self.$i18n.t('Unable to login'));
+                    self.$alert('Unable to login');
                 }
             })
         },
@@ -170,7 +170,7 @@ export default {
             const router = self.$f7router;
 
             if (!this.passcode) {
-                app.dialog.alert(self.$i18n.t('Please input passcode'));
+                self.$alert('Please input passcode');
                 return;
             }
 
@@ -180,11 +180,11 @@ export default {
                 passcode: self.passcode,
                 token: self.tempToken
             }).then(response => {
-                self.$f7.preloader.hide();
+                app.preloader.hide();
                 const data = response.data;
 
                 if (!data || !data.success || !data.result || !data.result.token) {
-                    app.dialog.alert(self.$i18n.t('Unable to verify'));
+                    self.$alert('Unable to verify');
                     return;
                 }
 
@@ -192,12 +192,12 @@ export default {
                 app.sheet.close('#2fa-auth-sheet');
                 router.navigate('/');
             }).catch(error => {
-                self.$f7.preloader.hide();
+                app.preloader.hide();
 
                 if (error.response && error.response.data && error.response.data.errorMessage) {
-                    app.dialog.alert(self.$i18n.t(`error.${error.response.data.errorMessage}`));
+                    self.$alert(`error.${error.response.data.errorMessage}`);
                 } else {
-                    app.dialog.alert(self.$i18n.t('Unable to verify'));
+                    self.$alert('Unable to verify');
                 }
             })
         },
diff --git a/src/views/mobile/Settings.vue b/src/views/mobile/Settings.vue
index e10d2654..30d9a3e0 100644
--- a/src/views/mobile/Settings.vue
+++ b/src/views/mobile/Settings.vue
@@ -38,25 +38,12 @@ export default {
     methods: {
         logout() {
             const self = this;
-            const app = self.$f7;
             const router = self.$f7router;
 
-            app.dialog.create({
-                title: self.$i18n.t('global.app.title'),
-                text: self.$i18n.t('Are you sure you want to log out?'),
-                buttons: [
-                    {
-                        text: self.$i18n.t('Cancel'),
-                    },
-                    {
-                        text: self.$i18n.t('OK'),
-                        onClick: () => {
-                            this.$user.clearToken();
-                            router.navigate('/');
-                        }
-                    }
-                ]
-            }).open();
+            self.$confirm('Are you sure you want to log out?', () => {
+                self.$user.clearToken();
+                router.navigate('/');
+            });
         }
     }
 };