| Change Type | Old Version | New Version | d.ts File |
| ---- | ------ | ------ | -------- |
|Added|NA|Class name: systemParameterEnhance;<br>Method or attribute name: function getSync(key: string, def?: string): string;|@ohos.systemParameterEnhance.d.ts|
|Added|NA|Class name: systemParameterEnhance;<br>Method or attribute name: function get(key: string, callback: AsyncCallback\<string>): void;|@ohos.systemParameterEnhance.d.ts|
|Added|NA|Class name: systemParameterEnhance;<br>Method or attribute name: function get(key: string, def: string, callback: AsyncCallback\<string>): void;|@ohos.systemParameterEnhance.d.ts|
|Added|NA|Class name: systemParameterEnhance;<br>Method or attribute name: function get(key: string, def?: string): Promise\<string>;|@ohos.systemParameterEnhance.d.ts|
|Added|NA|Class name: systemParameterEnhance;<br>Method or attribute name: function setSync(key: string, value: string): void;|@ohos.systemParameterEnhance.d.ts|
|Added|NA|Class name: systemParameterEnhance;<br>Method or attribute name: function set(key: string, value: string, callback: AsyncCallback\<void>): void;|@ohos.systemParameterEnhance.d.ts|
|Added|NA|Class name: systemParameterEnhance;<br>Method or attribute name: function set(key: string, value: string): Promise\<void>;|@ohos.systemParameterEnhance.d.ts|
|Deprecated version changed|Class name: Device;<br>Method or attribute name: static getInfo(options?: GetDeviceOptions): void;<br>Old version: |Class name: Device;<br>Method or attribute name: static getInfo(options?: GetDeviceOptions): void;<br>New version: 6<br>Substitute API: |@system.device.d.ts|