# @ohos.enterprise.deviceInfo (Device Information Management) (System API)

The deviceInfo module provides APIs for enterprise device information management, including the API for obtaining device serial numbers.

> **NOTE**
>
> The initial APIs of this module are supported since API version 10. Newly added APIs will be marked with a superscript to indicate their earliest API version.
>
> The APIs of this module can be used only in the stage model.
>
> The APIs of this module can be called only by a [device administrator application](../../mdm/mdm-kit-guide.md#introduction) that is [enabled](js-apis-enterprise-adminManager-sys.md#adminmanagerenableadmin).
> 
> This topic describes only the system APIs provided by the module. For details about its public APIs, see [@ohos.enterprise.deviceInfo](js-apis-enterprise-deviceInfo.md).

## Modules to Import

```ts
import { deviceInfo } from '@kit.MDMKit';
```

## deviceInfo.getDeviceSerial

getDeviceSerial(admin: Want, callback: AsyncCallback<string>): void

Obtains the device serial number through the specified device administrator application. This API uses an asynchronous callback to return the result.

**Required permissions**: ohos.permission.ENTERPRISE_GET_DEVICE_INFO

**System capability**: SystemCapability.Customization.EnterpriseDeviceManager

**Parameters**

| Name     | Type                                      | Mandatory  | Description                      |
| -------- | ---------------------------------------- | ---- | ------------------------------- |
| admin    | [Want](../apis-ability-kit/js-apis-app-ability-want.md)     | Yes   | Device administrator application.                 |
| callback | AsyncCallback<string>            | Yes   | Callback used to return the result. If the operation is successful, **err** is **null** and **data** is the device serial number obtained. If the operation fails, **err** is an error object.      |

**Error codes**

For details about the error codes, see [Enterprise Device Management Error Codes](errorcode-enterpriseDeviceManager.md) and [Universal Error Codes](../errorcode-universal.md).

| ID| Error Message                                                                      |
| ------- | ---------------------------------------------------------------------------- |
| 9200001 | The application is not an administrator application of the device.            |
| 9200002 | The administrator application does not have permission to manage the device. |
| 201 | Permission verification failed. The application does not have the permission required to call the API. |
| 202 | Permission verification failed. A non-system application calls a system API. |
| 401 | Parameter error. Possible causes: 1. Mandatory parameters are left unspecified; 2. Incorrect parameter types; 3. Parameter verification failed. |

**Example**

```ts
import { Want } from '@kit.AbilityKit';
let wantTemp: Want = {
  bundleName: 'com.example.myapplication',
  abilityName: 'EntryAbility',
};

deviceInfo.getDeviceSerial(wantTemp, (err, result) => {
  if (err) {
    console.error(`Failed to get device serial. Code: ${err.code}, message: ${err.message}`);
    return;
  }
  console.info(`Succeeded in getting device serial, result : ${result}`);
});
```

## deviceInfo.getDeviceSerial

getDeviceSerial(admin: Want): Promise<string>

Obtains the device serial number through the specified device administrator application. This API uses a promise to return the result.

**Required permissions**: ohos.permission.ENTERPRISE_GET_DEVICE_INFO

**System capability**: SystemCapability.Customization.EnterpriseDeviceManager

**Parameters**

| Name  | Type                                 | Mandatory  | Description     |
| ----- | ----------------------------------- | ---- | ------- |
| admin | [Want](../apis-ability-kit/js-apis-app-ability-want.md) | Yes   | Device administrator application.|

**Return value**

| Type                  | Description                     |
| --------------------- | ------------------------- |
| Promise<string> | Promise used to return the device serial number. |

**Error codes**

For details about the error codes, see [Enterprise Device Management Error Codes](errorcode-enterpriseDeviceManager.md) and [Universal Error Codes](../errorcode-universal.md).

| ID| Error Message                                                                    |
| ------- | ---------------------------------------------------------------------------- |
| 9200001 | The application is not an administrator application of the device.            |
| 9200002 | The administrator application does not have permission to manage the device. |
| 201 | Permission verification failed. The application does not have the permission required to call the API. |
| 202 | Permission verification failed. A non-system application calls a system API. |
| 401 | Parameter error. Possible causes: 1. Mandatory parameters are left unspecified; 2. Incorrect parameter types; 3. Parameter verification failed. |

**Example**

```ts
import { Want } from '@kit.AbilityKit';
import { BusinessError } from '@kit.BasicServicesKit';
let wantTemp: Want = {
  bundleName: 'com.example.myapplication',
  abilityName: 'EntryAbility',
};

deviceInfo.getDeviceSerial(wantTemp).then((result) => {
  console.info(`Succeeded in getting device serial, result : ${result}`);
}).catch((err: BusinessError) => {
  console.error(`Failed to get device serial. Code: ${err.code}, message: ${err.message}`);
});
```

## deviceInfo.getDisplayVersion

getDisplayVersion(admin: Want, callback: AsyncCallback<string>): void

Obtains the device version through the specified device administrator application. This API uses an asynchronous callback to return the result.

**Required permissions**: ohos.permission.ENTERPRISE_GET_DEVICE_INFO

**System capability**: SystemCapability.Customization.EnterpriseDeviceManager

**Parameters**

| Name     | Type                                      | Mandatory  | Description                      |
| -------- | ---------------------------------------- | ---- | ------------------------------- |
| admin    | [Want](../apis-ability-kit/js-apis-app-ability-want.md)      | Yes   | Device administrator application.                 |
| callback | AsyncCallback<string>            | Yes   | Callback used to return the result. If the operation is successful, **err** is **null** and **data** is the device version obtained. If the operation fails, **err** is an error object.      |

**Error codes**

For details about the error codes, see [Enterprise Device Management Error Codes](errorcode-enterpriseDeviceManager.md) and [Universal Error Codes](../errorcode-universal.md).

| ID| Error Message                                                                      |
| ------- | ---------------------------------------------------------------------------- |
| 9200001 | The application is not an administrator application of the device.            |
| 9200002 | The administrator application does not have permission to manage the device. |
| 201 | Permission verification failed. The application does not have the permission required to call the API. |
| 202 | Permission verification failed. A non-system application calls a system API. |
| 401 | Parameter error. Possible causes: 1. Mandatory parameters are left unspecified; 2. Incorrect parameter types; 3. Parameter verification failed. |

**Example**

```ts
import { Want } from '@kit.AbilityKit';
let wantTemp: Want = {
  bundleName: 'com.example.myapplication',
  abilityName: 'EntryAbility',
};

deviceInfo.getDisplayVersion(wantTemp, (err, result) => {
  if (err) {
    console.error(`Failed to get display version. Code: ${err.code}, message: ${err.message}`);
    return;
  }
  console.info(`Succeeded in getting display version, result : ${result}`);
});
```

## deviceInfo.getDisplayVersion

getDisplayVersion(admin: Want): Promise<string>

Obtains the device version through the specified device administrator application. This API uses a promise to return the result.

**Required permissions**: ohos.permission.ENTERPRISE_GET_DEVICE_INFO

**System capability**: SystemCapability.Customization.EnterpriseDeviceManager

**Parameters**

| Name  | Type                                 | Mandatory  | Description     |
| ----- | ----------------------------------- | ---- | ------- |
| admin | [Want](../apis-ability-kit/js-apis-app-ability-want.md) | Yes   | Device administrator application.|

**Return value**

| Type                  | Description                     |
| --------------------- | ------------------------- |
| Promise<string> | Promise used to return the device version obtained.|

**Error codes**

For details about the error codes, see [Enterprise Device Management Error Codes](errorcode-enterpriseDeviceManager.md) and [Universal Error Codes](../errorcode-universal.md).

| ID| Error Message                                                                    |
| ------- | ---------------------------------------------------------------------------- |
| 9200001 | The application is not an administrator application of the device.            |
| 9200002 | The administrator application does not have permission to manage the device. |
| 201 | Permission verification failed. The application does not have the permission required to call the API. |
| 202 | Permission verification failed. A non-system application calls a system API. |
| 401 | Parameter error. Possible causes: 1. Mandatory parameters are left unspecified; 2. Incorrect parameter types; 3. Parameter verification failed. |

**Example**

```ts
import { Want } from '@kit.AbilityKit';
import { BusinessError } from '@kit.BasicServicesKit';
let wantTemp: Want = {
  bundleName: 'com.example.myapplication',
  abilityName: 'EntryAbility',
};

deviceInfo.getDisplayVersion(wantTemp).then((result) => {
  console.info(`Succeeded in getting display version, result : ${result}`);
}).catch((err: BusinessError) => {
  console.error(`Failed to get display version. Code: ${err.code}, message: ${err.message}`);
});
```

## deviceInfo.getDeviceName

getDeviceName(admin: Want, callback: AsyncCallback<string>): void

Obtains the device name through the specified device administrator application. This API uses an asynchronous callback to return the result.

**Required permissions**: ohos.permission.ENTERPRISE_GET_DEVICE_INFO

**System capability**: SystemCapability.Customization.EnterpriseDeviceManager

**Parameters**

| Name     | Type                                      | Mandatory  | Description                      |
| -------- | ---------------------------------------- | ---- | ------------------------------- |
| admin    | [Want](../apis-ability-kit/js-apis-app-ability-want.md)      | Yes   | Device administrator application.                 |
| callback | AsyncCallback<string>              | Yes   | Callback used to return the result. If the operation is successful, **err** is **null** and **data** is the device name obtained. If the operation fails, **err** is an error object.      |

**Error codes**

For details about the error codes, see [Enterprise Device Management Error Codes](errorcode-enterpriseDeviceManager.md) and [Universal Error Codes](../errorcode-universal.md).

| ID| Error Message                                                                      |
| ------- | ---------------------------------------------------------------------------- |
| 9200001 | The application is not an administrator application of the device.            |
| 9200002 | The administrator application does not have permission to manage the device. |
| 201 | Permission verification failed. The application does not have the permission required to call the API. |
| 202 | Permission verification failed. A non-system application calls a system API. |
| 401 | Parameter error. Possible causes: 1. Mandatory parameters are left unspecified; 2. Incorrect parameter types; 3. Parameter verification failed. |

**Example**

```ts
import { Want } from '@kit.AbilityKit';
let wantTemp: Want = {
  bundleName: 'com.example.myapplication',
  abilityName: 'EntryAbility',
};

deviceInfo.getDeviceName(wantTemp, (err, result) => {
  if (err) {
    console.error(`Failed to get device name. Code: ${err.code}, message: ${err.message}`);
    return;
  }
  console.info(`Succeeded in getting device name, result : ${result}`);
});
```

## deviceInfo.getDeviceName

getDeviceName(admin: Want): Promise<string>

Obtains the device name through the specified device administrator application. This API uses a promise to return the result.

**Required permissions**: ohos.permission.ENTERPRISE_GET_DEVICE_INFO

**System capability**: SystemCapability.Customization.EnterpriseDeviceManager

**Parameters**

| Name  | Type                                 | Mandatory  | Description     |
| ----- | ----------------------------------- | ---- | ------- |
| admin | [Want](../apis-ability-kit/js-apis-app-ability-want.md) | Yes   | Device administrator application.|

**Return value**

| Type                  | Description                     |
| --------------------- | ------------------------- |
| Promise<string> | Promise used to return the device name.|

**Error codes**

For details about the error codes, see [Enterprise Device Management Error Codes](errorcode-enterpriseDeviceManager.md) and [Universal Error Codes](../errorcode-universal.md).

| ID| Error Message                                                                    |
| ------- | ---------------------------------------------------------------------------- |
| 9200001 | The application is not an administrator application of the device.            |
| 9200002 | The administrator application does not have permission to manage the device. |
| 201 | Permission verification failed. The application does not have the permission required to call the API. |
| 202 | Permission verification failed. A non-system application calls a system API. |
| 401 | Parameter error. Possible causes: 1. Mandatory parameters are left unspecified; 2. Incorrect parameter types; 3. Parameter verification failed. |

**Example**

```ts
import { Want } from '@kit.AbilityKit';
import { BusinessError } from '@kit.BasicServicesKit';
let wantTemp: Want = {
  bundleName: 'com.example.myapplication',
  abilityName: 'EntryAbility',
};

deviceInfo.getDeviceName(wantTemp).then((result) => {
  console.info(`Succeeded in getting device name, result : ${result}`);
}).catch((err: BusinessError) => {
  console.error(`Failed to get device name. Code: ${err.code}, message: ${err.message}`);
});
```