The steps to rename an app on a Huawei phone are as follows:
1. Open the application list on your Huawei phone, find the software you want to rename, and press and hold the software icon until the option appears.
2. In the pop-up menu, select the "Desktop Editing" option.
3. In the pop-up window, click the edit button (pencil icon) next to the software name.
4. In the editing window, enter the new software name and click the "Save" button.