# Authentication Screen ## Built in Login Screen If you would like to use the Chat SDK default authentication screen you should add the following to your `AndroidManifest.xml`: ``` <activity android:name="sdk.chat.ui.activities.SplashScreenActivity"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> ``` Or if you want to launch the activity manually, you can do it using: ``` ChatSDK.ui().startSplashScreenActivity(context); ``` This will show the splash screen activity. The app will try to authenticate. If it succeeds it will launch the `MainActivity`. If it fails, it will launch the `LoginActivity`.