To edit audio on your phone, you can use various apps available on both Android and iOS platforms. One popular app for editing audio on mobile devices is "Audacity." Here is a simple example of how you can trim an audio file using Audacity:
```markdown
1. Download and install Audacity from the app store.
2. Open the app and import the audio file you want to edit.
3. Select the portion of the audio you want to keep by clicking and dragging the cursor.
4. Go to the "Edit" menu and choose "Trim" to remove the selected portion.
5. Save the edited audio file with a new name.
Note: The steps may vary slightly depending on the app you choose to use for editing audio on your phone.
```
