# Configure the OS

Maestro Cloud allows you to test your application across multiple Android and iOS versions. This ensures your app remains compatible and performs reliably across different mobile environments.

{% hint style="info" %}
**Maestro Cloud Plan required.** OS configuration options are available on the [Maestro Cloud Plan](https://maestro.dev/cloud).
{% endhint %}

### Full list of supported Cloud devices

You can access the full list of supported Cloud devices and operating systems by using the following command:

```bash
maestro list-cloud-devices
```

### Android

You can specify the Android OS version using the `--device-os` flag when using Maestro Cloud:

```bash
maestro cloud --device-os "<DEVICE_OS>" --app-file "<APP_FILE>" --flows "<FLOWS>"
```

For example, to run your flows on Android 14:

```bash
maestro cloud --device-os "android-34" --app-file myapp.apk --flows myflows/
```

Run `maestro list-cloud-devices` to see the full list of supported Android OS versions.

{% hint style="info" %}
**Reproducing Cloud runs locally**

To closely reproduce Maestro Cloud runs for Android on your local machine, create an emulator of the same API version and use the Google APIs variant (not Google Play).
{% endhint %}

### iOS

For iOS, you can configure both the runtime version and the device model.

Maestro recommends specifying both the minor OS version and the device model. Use the `--device-os` and `--device-model` flags to select a specific combination:

```bash
maestro cloud --device-os "<DEVICE_OS>" --device-model "<DEVICE_MODEL>" --app-file "<APP_FILE>" --flows "<FLOWS>"
```

For example, to run your flows on iOS 26.2 using an iPhone 17 Pro, use the following command:

```bash
maestro cloud --device-os "iOS-26-2" --device-model "iPhone-17-Pro" --app-file myapp.app --flows myflows/
```

Run `maestro list-cloud-devices` to see the full list of supported iOS device models and OS versions.

{% hint style="info" %}
**Deprecated: `--ios-version` & `--android-api-level`**

The `--ios-version` and `--android-api-level` options are deprecated and will be removed in a future release. Use the `--device-os` and `--device-model` flags instead.

Previously, the `--ios-version` flag allowed you to specify only a major version (for example, `16`, `17`, or `18`). When using this flag, Maestro Cloud automatically runs your flows on an **iPhone 11** simulator.
{% endhint %}

### Related content

Now that you understand how configure the OS, explore other ways to customize your test environment:

* [App locales and device timezones](/maestro-cloud/environment-configuration/app-locales-and-device-timezones.md): Select the device locale for Maestro Cloud tests.
* Set up notifications via [Slack](/maestro-cloud/notifications/set-slack-notification.md), [email](/maestro-cloud/notifications/set-email-notification.md), or [webhooks](/maestro-cloud/notifications/configure-webhooks.md) to stay informed about build and test results.


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