1| Change Type | Old Version | New Version | d.ts File | 2| ---- | ------ | ------ | -------- | 3|Permission added|Class name: deviceInfo<br>Method or attribute name: const serial: string;<br>Permission: N/A|Class name: deviceInfo<br>Method or attribute name: const serial: string;<br>Permission: ohos.permission.sec.ACCESS_UDID|@ohos.deviceInfo.d.ts| 4|Permission added|Class name: deviceInfo<br>Method or attribute name: const udid: string;<br>Permission: N/A|Class name: deviceInfo<br>Method or attribute name: const udid: string;<br>Permission: ohos.permission.sec.ACCESS_UDID|@ohos.deviceInfo.d.ts| 5