In this step-by-step tutorial, you’ll learn **how to implement Banner Ads in Flutter using Google AdMob**. Banner ads are one of the most common ways to monetize mobile applications, and Flutter makes it simple to integrate them for both Android and iOS.

We’ll walk through everything you need to know—from **setting up an AdMob account** and **configuring app IDs** to **displaying a live banner ad** in your Flutter application. Whether you’re new to mobile ads or looking to improve your monetization strategy, this tutorial will help you get started quickly.

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**What You’ll Learn:**

* How to create an AdMob account and get your Ad Unit ID
* How to set up the Google Mobile Ads SDK in Flutter
* How to configure Android and iOS for AdMob integration
* How to implement a Banner Ad widget in Flutter
* How to test with sample ads before going live
* Best practices for ad placement and user experience

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**Step 1: Add Google Mobile Ads Dependency**
In your `pubspec.yaml` file, add:

```yaml
dependencies:
google_mobile_ads: ^3.0.0
```

Then run:

```bash
flutter pub get
```

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**Step 2: Initialize Mobile Ads SDK**
In your `main.dart`:

```dart
import 'package:flutter/material.dart';
import 'package:google_mobile_ads/google_mobile_ads.dart';

void main() async {
WidgetsFlutterBinding.ensureInitialized();
MobileAds.instance.initialize();
runApp(MyApp());
}
```

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**Step 3: Implement Banner Ad**

**Pro Tips:**

* Always test with Google’s sample Ad Unit IDs before going live.
* Place banner ads in a non-intrusive location, like the bottom of the screen.
* Follow Google’s AdMob policies to avoid account suspension.
* Track ad performance in the AdMob dashboard to optimize earnings.

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