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# ProductPageLocaleDetails.AssetsByDevice

A map of device type to a `DeviceAssetGroup` object.

```
object ProductPageLocaleDetails.AssetsByDevice
```

## Discussion

Each key is a device type identifier, such as `iphone_6_5` or `iphone_6_7`, not a fixed field name. The `assetsByDevice` field is a free-form map rather than an object with named properties, so the reference page labels this key `Any Key`. The value for each key is a [`DeviceAssetGroup`](/documentation/Apple-Ads-Platform-API/DeviceAssetGroup) containing that device’s asset references and fallback devices.

On the parent [`ProductPageLocaleDetails`](/documentation/Apple-Ads-Platform-API/ProductPageLocaleDetails) object, `assetsByDevice` is the field that carries a product page locale’s screenshots and preview videos. Each device-type key maps to a [`DeviceAssetGroup`](/documentation/Apple-Ads-Platform-API/DeviceAssetGroup) holding an `assets` array of asset references and an `appPreviewDeviceFallBackDevices` array listing which other device types to fall back to when assets are not available for that class.

---

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