Take the iPhone 11 mobile phone as an example, the operation is as follows.

1. Open WeChat directly to the file you need, then click the three dots in the upper right corner and choose to open it with other applications.

2. Select "Open with other applications" and find the "Import with Numbers" icon.

3. After clicking Import with Numbers, a display as shown below will appear.

4. After the import is successful, select "OK" and wait for the file update to complete.

5. Open the file and you can edit formulas and cells at will. Finally, click "Finish" in the upper left corner to save.