diff --git a/packages/rtn-web-browser/jest.config.js b/packages/rtn-web-browser/jest.config.js
index 3a0e3340f9f..fd22133a060 100644
--- a/packages/rtn-web-browser/jest.config.js
+++ b/packages/rtn-web-browser/jest.config.js
@@ -2,10 +2,10 @@ module.exports = {
 	...require('../../jest.config'),
 	coverageThreshold: {
 		global: {
-			branches: 100,
-			functions: 100,
-			lines: 100,
-			statements: 100,
+			branches: 25,
+			functions: 25,
+			lines: 35,
+			statements: 35,
 		},
 	},
 };
diff --git a/packages/rtn-web-browser/package.json b/packages/rtn-web-browser/package.json
index 89f4e878b43..ee5e6408bde 100644
--- a/packages/rtn-web-browser/package.json
+++ b/packages/rtn-web-browser/package.json
@@ -11,9 +11,9 @@
 		"access": "public"
 	},
 	"scripts": {
-		"prepare:ios": "echo 'no-op'",
+    "prepare:ios": "echo 'no-op'",
 		"prepare:android": "echo 'no-op'",
-		"test": "echo 'no-op'",
+		"test": "jest -w 1 --coverage --logHeapUsage",
 		"test:ios": "echo 'no-op'",
 		"test:android": "./android/gradlew test -p ./android",
 		"build-with-test": "npm run clean && npm test && tsc",
diff --git a/packages/rtn-web-browser/src/apis/__tests__/openAuthSessionAsync.test.ts b/packages/rtn-web-browser/src/apis/__tests__/openAuthSessionAsync.test.ts
new file mode 100644
index 00000000000..afbb034ff6e
--- /dev/null
+++ b/packages/rtn-web-browser/src/apis/__tests__/openAuthSessionAsync.test.ts
@@ -0,0 +1,78 @@
+// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+import { Platform } from 'react-native';
+
+import { nativeModule } from '../../nativeModule';
+import { isChromebook, openAuthSessionAsync } from '../openAuthSessionAsync';
+
+jest.mock('react-native', () => ({
+	Platform: { OS: 'ios' },
+	AppState: { addEventListener: jest.fn() },
+	Linking: { addEventListener: jest.fn() },
+	NativeModules: {},
+}));
+
+jest.mock('../../nativeModule', () => ({
+	nativeModule: { openAuthSessionAsync: jest.fn() },
+}));
+
+const mockPlatform = Platform as jest.Mocked<typeof Platform>;
+const mockNativeModule = nativeModule as jest.Mocked<typeof nativeModule>;
+
+describe('openAuthSessionAsync', () => {
+	beforeEach(() => {
+		jest.clearAllMocks();
+		mockPlatform.OS = 'ios';
+	});
+
+	describe('isChromebook', () => {
+		it('returns false by default', async () => {
+			const result = await isChromebook();
+			expect(result).toBe(false);
+		});
+	});
+
+	describe('openAuthSessionAsync', () => {
+		it('enforces HTTPS on URLs', async () => {
+			mockNativeModule.openAuthSessionAsync.mockResolvedValue('result');
+
+			await openAuthSessionAsync('http://example.com', ['myapp://callback']);
+
+			expect(mockNativeModule.openAuthSessionAsync).toHaveBeenCalledWith(
+				'https://example.com',
+				'myapp://callback',
+				false,
+			);
+		});
+
+		it('calls iOS implementation', async () => {
+			mockNativeModule.openAuthSessionAsync.mockResolvedValue('result');
+
+			const result = await openAuthSessionAsync(
+				'https://example.com',
+				['myapp://callback'],
+				true,
+			);
+
+			expect(result).toBe('result');
+			expect(mockNativeModule.openAuthSessionAsync).toHaveBeenCalledWith(
+				'https://example.com',
+				'myapp://callback',
+				true,
+			);
+		});
+
+		it('finds first non-web URL for redirect', async () => {
+			const redirectUrls = ['https://web.com', 'myapp://deep'];
+
+			await openAuthSessionAsync('https://example.com', redirectUrls);
+
+			expect(mockNativeModule.openAuthSessionAsync).toHaveBeenCalledWith(
+				'https://example.com',
+				'myapp://deep',
+				false,
+			);
+		});
+	});
+});
diff --git a/packages/rtn-web-browser/src/apis/openAuthSessionAsync.ts b/packages/rtn-web-browser/src/apis/openAuthSessionAsync.ts
index 7ddee8ec30f..ff847256ea7 100644
--- a/packages/rtn-web-browser/src/apis/openAuthSessionAsync.ts
+++ b/packages/rtn-web-browser/src/apis/openAuthSessionAsync.ts
@@ -5,6 +5,7 @@ import {
 	AppState,
 	Linking,
 	NativeEventSubscription,
+	NativeModules,
 	Platform,
 } from 'react-native';
 
@@ -13,6 +14,32 @@ import { nativeModule } from '../nativeModule';
 let appStateListener: NativeEventSubscription | undefined;
 let redirectListener: NativeEventSubscription | undefined;
 
+export async function isChromebook(): Promise<boolean> {
+	// expo go
+	try {
+		const Device = require('expo-device');
+		if (Device?.hasPlatformFeatureAsync) {
+			if (await Device.hasPlatformFeatureAsync('org.chromium.arc')) return true;
+			if (
+				await Device.hasPlatformFeatureAsync(
+					'org.chromium.arc.device_management',
+				)
+			)
+				return true;
+		}
+	} catch {
+		// not using Expo
+	}
+
+	// fallback to native module
+	try {
+		const nm = (NativeModules as any)?.ChromeOS;
+		if (nm?.isChromeOS) return !!(await nm.isChromeOS());
+	} catch {}
+
+	return false;
+}
+
 export const openAuthSessionAsync = async (
 	url: string,
 	redirectUrls: string[],
@@ -25,6 +52,15 @@ export const openAuthSessionAsync = async (
 	}
 
 	if (Platform.OS === 'android') {
+		try {
+			const isChromebookRes = await isChromebook();
+			if (isChromebookRes) {
+				return openAuthSessionChromeOs(httpsUrl, redirectUrls);
+			}
+		} catch {
+			// ignore and fallback to android
+		}
+
 		return openAuthSessionAndroid(httpsUrl, redirectUrls);
 	}
 };
@@ -66,6 +102,27 @@ const openAuthSessionAndroid = async (url: string, redirectUrls: string[]) => {
 	}
 };
 
+const openAuthSessionChromeOs = async (url: string, redirectUrls: string[]) => {
+	try {
+		const [redirectUrl] = await Promise.all([
+			Promise.race([
+				// wait for app to redirect, resulting in a redirectUrl
+				getRedirectPromise(redirectUrls),
+				// wait for app to return some other way, resulting in null
+				getAppStatePromise(),
+			]),
+			Linking.openURL(url),
+		]);
+
+		if (redirectUrl) Linking.openURL(redirectUrl);
+
+		return redirectUrl;
+	} finally {
+		removeAppStateListener();
+		removeRedirectListener();
+	}
+};
+
 const getAppStatePromise = (): Promise<null> =>
 	new Promise(resolve => {
 		// remove any stray listeners before creating new ones