Huawei mobile phone backup function is very powerful and can back up all data, including contacts, text messages, call history, photos, videos, music, applications, etc. The following are the specific steps to back up all data:

Step 1: Turn on the backup function

First, turn on the backup function of your Huawei phone. In the phone's settings, find the "Cloud Service" option, click to enter, find the "Backup" option, and turn on the backup function. If you have not logged in to your Huawei account, you need to log in to your Huawei account first.

Step 2: Select backup content

In the backup function, you can select the backup content. By default, Huawei phones will back up data such as contacts, text messages, call logs, photos, videos, music, etc. If you want to back up the data of other applications, you can select the application that needs to be backed up in the "App Data" option.

Step 3: Start Backup

After selecting the backup content, click the "Backup" button to start backing up all data. The length of the backup time depends on the size of your data. Please ensure that the mobile phone network is open during the backup process to avoid backup failure.

After the backup is completed, you can view the backed up data in "Cloud Service". If you need to restore data, you only need to log in to your Huawei account on the new device and select the data that needs to be restored in "Cloud Service" to restore the data to the new device.