> - The APIs of this module are no longer maintained since API version 6. It is recommended that you use [`@ohos.deviceInfo`](js-apis-device-info.md) instead.
The **device** module provides APIs for checking information about the current device.
> **NOTE**
> - The APIs of this module are no longer maintained since API version 6. It is recommended that you use [@ohos.deviceInfo](js-apis-device-info.md) instead.
>
> - The initial APIs of this module are supported since API version 3. Newly added APIs will be marked with a superscript to indicate their earliest API version.
The following error code will be returned if the device information fails to be obtained.
| Error Code | Description |
| brand | string | Brand.|
| manufacturer | string | Manufacturer.|
| model | string | Model. |
| product | string | Product number.|
| language<sup>4+</sup> | string | System language.|
| region<sup>4+</sup> | string | System region.|
| windowWidth | number | Window width.|
| windowHeight | number | Window height.|
| screenDensity<sup>4+</sup> | number | Screen density.|
| screenShape<sup>4+</sup> | string | Screen shape. The options are as follows:<br>- **rect**: rectangle screen<br>- **circle**: circle screen|
| apiVersion<sup>4+</sup> | number | API version.|
| releaseType<sup>4+</sup> | string | Release type. The value includes both the release type and the API version, for example, Beta1.<br>Available release types are as follows:<br>- **Canary**: For the same API version, different canary releases are compatible with each other, but not compatible with those of the **beta** and **release** type.<br>- **Beta**: For the same API version, different beta releases are compatible with each other, but not compatible with those of the **release** type.<br>- **Release**: Releases of this type are compatible with the latest five API versions.|