diff --git a/src/services/navigation/index.ts b/src/services/navigation/index.ts
index 4f1d8cc..0c9b6fc 100644
--- a/src/services/navigation/index.ts
+++ b/src/services/navigation/index.ts
@@ -1,19 +1,45 @@
-import {navDefaultOptions, withTitle} from './options';
+import merge from 'lodash/merge';
+import {
+  navDefaultOptions,
+  screenDefaultOptions,
+  tabsDefaultOptions,
+} from './options';
 import {screens} from '../../screens';
 import {services} from '..';
 
 export class NavService implements IService {
   private inited = false;
+  private mountedScreens: Record<string, string> = {}; // Record<ComponentName, ComponentId>
 
   init = async (): PVoid => {
     if (!this.inited) {
-      this.setOptions();
+      this.registerListeners();
+      this.configureDefaultOptions();
 
       this.inited = true;
     }
   };
 
-  private setOptions = (): void => {
+  handleUIOptionsChange = () => {
+    // -- setting common default options
+    this.configureDefaultOptions();
+
+    // -- updating options among mounted screens
+    for (const cName in this.mountedScreens) {
+      screens.N.mergeOptions(
+        this.mountedScreens[cName],
+        merge(
+          screenDefaultOptions(),
+          tabsDefaultOptions(),
+          screens.get(cName as any).options,
+        ),
+      );
+    }
+  };
+
+  private configureDefaultOptions = () => {
+    const {t} = services;
+
     // -- setting common default options
     screens.N.setDefaultOptions(navDefaultOptions());
 
@@ -21,8 +47,16 @@ export class NavService implements IService {
     // for ex., if you want to use translate service
     screens.mergeOptions('Main', {
       topBar: {
-        ...withTitle(services.t.do('home.title')),
+        title: {text: t.do('home.title')},
+      },
+      bottomTab: {
+        text: t.do('home.title'),
       },
     });
   };
+
+  private registerListeners = () =>
+    screens.N.events().registerComponentDidAppearListener(
+      e => (this.mountedScreens[e.componentName] = e.componentId),
+    );
 }