Patent attributes
An information backup method applied to a communications system including a primary device, a secondary device, and a cloud device, and the method is performed by the primary device. The method includes sending a first identity notification to the cloud device, where the first identity notification is a notification indicating that the primary device has a primary device identity, and uploading obtained first user information to the cloud device when determining that a communication status of the cloud device is normal, where the first user information is stored by the cloud device and provided to the secondary device, and the first user information is to-be-backed-up information of user equipment that gets online from the primary device when the communication status of the cloud device is normal.
