# 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`.