diff --git a/app/scripts/controllers/app-state.js b/app/scripts/controllers/app-state.js
index f7669e055..3360cd4f9 100644
--- a/app/scripts/controllers/app-state.js
+++ b/app/scripts/controllers/app-state.js
@@ -1,5 +1,7 @@
 import EventEmitter from 'events';
 import { ObservableStore } from '@metamask/obs-store';
+import { v4 as uuid } from 'uuid';
+import log from 'loglevel';
 import { METAMASK_CONTROLLER_EVENTS } from '../metamask-controller';
 import { MINUTE } from '../../../shared/constants/time';
 import { AUTO_LOCK_TIMEOUT_ALARM } from '../../../shared/constants/alarms';
@@ -8,8 +10,11 @@ import { isBeta } from '../../../ui/helpers/utils/build-types';
 import {
   ENVIRONMENT_TYPE_BACKGROUND,
   POLLING_TOKEN_ENVIRONMENT_TYPES,
+  ORIGIN_METAMASK,
 } from '../../../shared/constants/app';
 
+const APPROVAL_REQUEST_TYPE = 'unlock';
+
 export default class AppStateController extends EventEmitter {
   /**
    * @param {object} opts
@@ -20,9 +25,9 @@ export default class AppStateController extends EventEmitter {
       isUnlocked,
       initState,
       onInactiveTimeout,
-      showUnlockRequest,
       preferencesStore,
       qrHardwareStore,
+      messenger,
     } = opts;
     super();
 
@@ -59,8 +64,6 @@ export default class AppStateController extends EventEmitter {
     this.waitingForUnlock = [];
     addUnlockListener(this.handleUnlock.bind(this));
 
-    this._showUnlockRequest = showUnlockRequest;
-
     preferencesStore.subscribe(({ preferences }) => {
       const currentState = this.store.getState();
       if (currentState.timeoutMinutes !== preferences.autoLockTimeLimit) {
@@ -74,6 +77,9 @@ export default class AppStateController extends EventEmitter {
 
     const { preferences } = preferencesStore.getState();
     this._setInactiveTimeout(preferences.autoLockTimeLimit);
+
+    this.messagingSystem = messenger;
+    this._approvalRequestId = null;
   }
 
   /**
@@ -108,7 +114,7 @@ export default class AppStateController extends EventEmitter {
     this.waitingForUnlock.push({ resolve });
     this.emit(METAMASK_CONTROLLER_EVENTS.UPDATE_BADGE);
     if (shouldShowUnlockRequest) {
-      this._showUnlockRequest();
+      this._requestApproval();
     }
   }
 
@@ -122,6 +128,8 @@ export default class AppStateController extends EventEmitter {
       }
       this.emit(METAMASK_CONTROLLER_EVENTS.UPDATE_BADGE);
     }
+
+    this._acceptApproval();
   }
 
   /**
@@ -369,4 +377,39 @@ export default class AppStateController extends EventEmitter {
       serviceWorkerLastActiveTime,
     });
   }
+
+  _requestApproval() {
+    this._approvalRequestId = uuid();
+
+    this.messagingSystem
+      .call(
+        'ApprovalController:addRequest',
+        {
+          id: this._approvalRequestId,
+          origin: ORIGIN_METAMASK,
+          type: APPROVAL_REQUEST_TYPE,
+        },
+        true,
+      )
+      .catch(() => {
+        // Intentionally ignored as promise not currently used
+      });
+  }
+
+  _acceptApproval() {
+    if (!this._approvalRequestId) {
+      log.error('Attempted to accept missing unlock approval request');
+      return;
+    }
+    try {
+      this.messagingSystem.call(
+        'ApprovalController:acceptRequest',
+        this._approvalRequestId,
+      );
+    } catch (error) {
+      log.error('Failed to accept transaction approval request', error);
+    }
+
+    this._approvalRequestId = null;
+  }
 }
diff --git a/app/scripts/controllers/app-state.test.js b/app/scripts/controllers/app-state.test.js
index 7aa27e44b..02d3cda3c 100644
--- a/app/scripts/controllers/app-state.test.js
+++ b/app/scripts/controllers/app-state.test.js
@@ -1,12 +1,158 @@
+import { ObservableStore } from '@metamask/obs-store';
+import log from 'loglevel';
+import { ORIGIN_METAMASK } from '../../../shared/constants/app';
 import AppStateController from './app-state';
 
+jest.mock('loglevel');
+
+let appStateController, mockStore;
+
 describe('AppStateController', () => {
+  mockStore = new ObservableStore();
+  const createAppStateController = (initState = {}) => {
+    return new AppStateController({
+      addUnlockListener: jest.fn(),
+      isUnlocked: jest.fn(() => true),
+      initState,
+      onInactiveTimeout: jest.fn(),
+      showUnlockRequest: jest.fn(),
+      preferencesStore: {
+        subscribe: jest.fn(),
+        getState: jest.fn(() => ({
+          preferences: {
+            autoLockTimeLimit: 0,
+          },
+        })),
+      },
+      qrHardwareStore: {
+        subscribe: jest.fn(),
+      },
+      messenger: {
+        call: jest.fn(() => ({
+          catch: jest.fn(),
+        })),
+      },
+    });
+  };
+
+  beforeEach(() => {
+    appStateController = createAppStateController({ store: mockStore });
+  });
+
   describe('setOutdatedBrowserWarningLastShown', () => {
-    it('should set the last shown time', () => {
-      const appStateController = new AppStateController({
+    it('sets the last shown time', () => {
+      appStateController = createAppStateController();
+      const date = new Date();
+
+      appStateController.setOutdatedBrowserWarningLastShown(date);
+
+      expect(
+        appStateController.store.getState().outdatedBrowserWarningLastShown,
+      ).toStrictEqual(date);
+    });
+
+    it('sets outdated browser warning last shown timestamp', () => {
+      const lastShownTimestamp = Date.now();
+      appStateController = createAppStateController();
+      const updateStateSpy = jest.spyOn(
+        appStateController.store,
+        'updateState',
+      );
+
+      appStateController.setOutdatedBrowserWarningLastShown(lastShownTimestamp);
+
+      expect(updateStateSpy).toHaveBeenCalledTimes(1);
+      expect(updateStateSpy).toHaveBeenCalledWith({
+        outdatedBrowserWarningLastShown: lastShownTimestamp,
+      });
+
+      updateStateSpy.mockRestore();
+    });
+  });
+
+  describe('getUnlockPromise', () => {
+    it('waits for unlock if the extension is locked', async () => {
+      appStateController = createAppStateController();
+      const isUnlockedMock = jest
+        .spyOn(appStateController, 'isUnlocked')
+        .mockReturnValue(false);
+      const waitForUnlockSpy = jest.spyOn(appStateController, 'waitForUnlock');
+
+      appStateController.getUnlockPromise(true);
+      expect(isUnlockedMock).toHaveBeenCalled();
+      expect(waitForUnlockSpy).toHaveBeenCalledWith(expect.any(Function), true);
+    });
+
+    it('resolves immediately if the extension is already unlocked', async () => {
+      appStateController = createAppStateController();
+      const isUnlockedMock = jest
+        .spyOn(appStateController, 'isUnlocked')
+        .mockReturnValue(true);
+
+      await expect(
+        appStateController.getUnlockPromise(false),
+      ).resolves.toBeUndefined();
+
+      expect(isUnlockedMock).toHaveBeenCalled();
+    });
+  });
+
+  describe('waitForUnlock', () => {
+    it('resolves immediately if already unlocked', async () => {
+      const emitSpy = jest.spyOn(appStateController, 'emit');
+      const resolveFn = jest.fn();
+      appStateController.waitForUnlock(resolveFn, false);
+      expect(emitSpy).toHaveBeenCalledWith('updateBadge');
+      expect(appStateController.messagingSystem.call).toHaveBeenCalledTimes(0);
+    });
+
+    it('creates approval request when waitForUnlock is called with shouldShowUnlockRequest as true', async () => {
+      jest.spyOn(appStateController, 'isUnlocked').mockReturnValue(false);
+
+      const resolveFn = jest.fn();
+      appStateController.waitForUnlock(resolveFn, true);
+
+      expect(appStateController.messagingSystem.call).toHaveBeenCalledTimes(1);
+      expect(appStateController.messagingSystem.call).toHaveBeenCalledWith(
+        'ApprovalController:addRequest',
+        expect.objectContaining({
+          id: expect.any(String),
+          origin: ORIGIN_METAMASK,
+          type: 'unlock',
+        }),
+        true,
+      );
+    });
+  });
+
+  describe('handleUnlock', () => {
+    beforeEach(() => {
+      jest.spyOn(appStateController, 'isUnlocked').mockReturnValue(false);
+    });
+    afterEach(() => {
+      jest.clearAllMocks();
+    });
+    it('accepts approval request revolving all the related promises', async () => {
+      const emitSpy = jest.spyOn(appStateController, 'emit');
+      const resolveFn = jest.fn();
+      appStateController.waitForUnlock(resolveFn, true);
+
+      appStateController.handleUnlock();
+
+      expect(emitSpy).toHaveBeenCalled();
+      expect(emitSpy).toHaveBeenCalledWith('updateBadge');
+      expect(appStateController.messagingSystem.call).toHaveBeenCalled();
+      expect(appStateController.messagingSystem.call).toHaveBeenCalledWith(
+        'ApprovalController:acceptRequest',
+        expect.any(String),
+      );
+    });
+
+    it('logs if rejecting approval request throws', async () => {
+      appStateController._approvalRequestId = 'mock-approval-request-id';
+      appStateController = new AppStateController({
         addUnlockListener: jest.fn(),
         isUnlocked: jest.fn(() => true),
-        initState: {},
         onInactiveTimeout: jest.fn(),
         showUnlockRequest: jest.fn(),
         preferencesStore: {
@@ -20,14 +166,184 @@ describe('AppStateController', () => {
         qrHardwareStore: {
           subscribe: jest.fn(),
         },
+        messenger: {
+          call: jest.fn(() => {
+            throw new Error('mock error');
+          }),
+        },
       });
-      const date = new Date();
 
-      appStateController.setOutdatedBrowserWarningLastShown(date);
+      appStateController.handleUnlock();
+
+      expect(log.error).toHaveBeenCalledTimes(1);
+      expect(log.error).toHaveBeenCalledWith(
+        'Attempted to accept missing unlock approval request',
+      );
+    });
+
+    it('returns without call messenger if no approval request in pending', async () => {
+      const emitSpy = jest.spyOn(appStateController, 'emit');
+
+      appStateController.handleUnlock();
+
+      expect(emitSpy).toHaveBeenCalledTimes(0);
+      expect(appStateController.messagingSystem.call).toHaveBeenCalledTimes(0);
+      expect(log.error).toHaveBeenCalledTimes(1);
+      expect(log.error).toHaveBeenCalledWith(
+        'Attempted to accept missing unlock approval request',
+      );
+    });
+  });
+
+  describe('setDefaultHomeActiveTabName', () => {
+    it('sets the default home tab name', () => {
+      appStateController.setDefaultHomeActiveTabName('testTabName');
+      expect(appStateController.store.getState().defaultHomeActiveTabName).toBe(
+        'testTabName',
+      );
+    });
+  });
+
+  describe('setConnectedStatusPopoverHasBeenShown', () => {
+    it('sets connected status popover as shown', () => {
+      appStateController.setConnectedStatusPopoverHasBeenShown();
+      expect(
+        appStateController.store.getState().connectedStatusPopoverHasBeenShown,
+      ).toBe(true);
+    });
+  });
+
+  describe('setRecoveryPhraseReminderHasBeenShown', () => {
+    it('sets recovery phrase reminder as shown', () => {
+      appStateController.setRecoveryPhraseReminderHasBeenShown();
+      expect(
+        appStateController.store.getState().recoveryPhraseReminderHasBeenShown,
+      ).toBe(true);
+    });
+  });
+
+  describe('setRecoveryPhraseReminderLastShown', () => {
+    it('sets the last shown time of recovery phrase reminder', () => {
+      const timestamp = Date.now();
+      appStateController.setRecoveryPhraseReminderLastShown(timestamp);
 
       expect(
-        appStateController.store.getState().outdatedBrowserWarningLastShown,
-      ).toStrictEqual(date);
+        appStateController.store.getState().recoveryPhraseReminderLastShown,
+      ).toBe(timestamp);
+    });
+  });
+
+  describe('setLastActiveTime', () => {
+    it('sets the last active time to the current time', () => {
+      const spy = jest.spyOn(appStateController, '_resetTimer');
+      appStateController.setLastActiveTime();
+
+      expect(spy).toHaveBeenCalled();
+    });
+  });
+
+  describe('setBrowserEnvironment', () => {
+    it('sets the current browser and OS environment', () => {
+      appStateController.setBrowserEnvironment('Windows', 'Chrome');
+      expect(
+        appStateController.store.getState().browserEnvironment,
+      ).toStrictEqual({
+        os: 'Windows',
+        browser: 'Chrome',
+      });
+    });
+  });
+
+  describe('addPollingToken', () => {
+    it('adds a pollingToken for a given environmentType', () => {
+      const pollingTokenType = 'popupGasPollTokens';
+      appStateController.addPollingToken('token1', pollingTokenType);
+      expect(appStateController.store.getState()[pollingTokenType]).toContain(
+        'token1',
+      );
+    });
+  });
+
+  describe('removePollingToken', () => {
+    it('removes a pollingToken for a given environmentType', () => {
+      const pollingTokenType = 'popupGasPollTokens';
+      appStateController.addPollingToken('token1', pollingTokenType);
+      appStateController.removePollingToken('token1', pollingTokenType);
+      expect(
+        appStateController.store.getState()[pollingTokenType],
+      ).not.toContain('token1');
+    });
+  });
+
+  describe('clearPollingTokens', () => {
+    it('clears all pollingTokens', () => {
+      appStateController.addPollingToken('token1', 'popupGasPollTokens');
+      appStateController.addPollingToken('token2', 'notificationGasPollTokens');
+      appStateController.addPollingToken('token3', 'fullScreenGasPollTokens');
+      appStateController.clearPollingTokens();
+
+      expect(
+        appStateController.store.getState().popupGasPollTokens,
+      ).toStrictEqual([]);
+      expect(
+        appStateController.store.getState().notificationGasPollTokens,
+      ).toStrictEqual([]);
+      expect(
+        appStateController.store.getState().fullScreenGasPollTokens,
+      ).toStrictEqual([]);
+    });
+  });
+
+  describe('setShowTestnetMessageInDropdown', () => {
+    it('sets whether the testnet dismissal link should be shown in the network dropdown', () => {
+      appStateController.setShowTestnetMessageInDropdown(true);
+      expect(
+        appStateController.store.getState().showTestnetMessageInDropdown,
+      ).toBe(true);
+
+      appStateController.setShowTestnetMessageInDropdown(false);
+      expect(
+        appStateController.store.getState().showTestnetMessageInDropdown,
+      ).toBe(false);
+    });
+  });
+
+  describe('setShowBetaHeader', () => {
+    it('sets whether the beta notification heading on the home page', () => {
+      appStateController.setShowBetaHeader(true);
+      expect(appStateController.store.getState().showBetaHeader).toBe(true);
+
+      appStateController.setShowBetaHeader(false);
+      expect(appStateController.store.getState().showBetaHeader).toBe(false);
+    });
+  });
+
+  describe('setCurrentPopupId', () => {
+    it('sets the currentPopupId in the appState', () => {
+      const popupId = 'popup1';
+
+      appStateController.setCurrentPopupId(popupId);
+      expect(appStateController.store.getState().currentPopupId).toBe(popupId);
+    });
+  });
+
+  describe('getCurrentPopupId', () => {
+    it('retrieves the currentPopupId saved in the appState', () => {
+      const popupId = 'popup1';
+
+      appStateController.setCurrentPopupId(popupId);
+      expect(appStateController.getCurrentPopupId()).toBe(popupId);
+    });
+  });
+
+  describe('setFirstTimeUsedNetwork', () => {
+    it('updates the array of the first time used networks', () => {
+      const chainId = '0x1';
+
+      appStateController.setFirstTimeUsedNetwork(chainId);
+      expect(appStateController.store.getState().usedNetworks[chainId]).toBe(
+        true,
+      );
     });
   });
 });
diff --git a/app/scripts/metamask-controller.js b/app/scripts/metamask-controller.js
index 133f5a877..53bba6767 100644
--- a/app/scripts/metamask-controller.js
+++ b/app/scripts/metamask-controller.js
@@ -520,9 +520,15 @@ export default class MetamaskController extends EventEmitter {
       isUnlocked: this.isUnlocked.bind(this),
       initState: initState.AppStateController,
       onInactiveTimeout: () => this.setLocked(),
-      showUnlockRequest: opts.showUserConfirmation,
       preferencesStore: this.preferencesController.store,
       qrHardwareStore: this.qrHardwareKeyring.getMemStore(),
+      messenger: this.controllerMessenger.getRestricted({
+        name: 'AppStateController',
+        allowedActions: [
+          `${this.approvalController.name}:addRequest`,
+          `${this.approvalController.name}:acceptRequest`,
+        ],
+      }),
     });
 
     const currencyRateMessenger = this.controllerMessenger.getRestricted({