Change assistant prompts you to restore the location of SMS authorization settings.

Generally, it can be solved by restoring the factory settings. If it still doesn't work, brush the machine to solve it.

The specific method of using Baidu network disk to back up old mobile phone short messages is as follows:

Tool: Huawei P20

Mobile phone version: Android v8

Baidu Netdisk

1. Download the Baidu network disk from the old mobile phone, as shown in the figure below.

2. Click Register in the lower right corner and log in the account, as shown in the figure below.

3. Find the mobile phone backup on the same page, as shown in the figure below.

4. Find the SMS backup and start it manually, as shown in the figure below.

5. Click the old mobile phone to back it up to the cloud, and the novice will repeat the above steps 1-4, and then click Restore to this machine, as shown in the figure below.