Can you change your Twitter username from the mobile app?

Yes, you can change your Twitter username from the mobile app. Here's how to do it:

1. Open the Twitter app on your mobile device.
2. Tap on your profile icon, usually located at the top left corner of the screen.
3. From the menu that appears, select "Settings and privacy."
4. Under the "Account" section, tap on "Username."
5. Delete your current username and enter the new one you want to use.
6. If the new username is available, you can tap "Done" to save the change. If it's not available, you'll need to choose a different username.

Remember that Twitter has a few rules for usernames:

* They must be between 4 and 15 characters long.
* They can only contain alphanumeric characters (letters, numbers, and underscores).
* They cannot start or end with an underscore.
* They also cannot be identical to a username that's already in use, even if it's not currently being used.

If you're having trouble coming up with a new username, Twitter's app offers a few suggestions based on your full name and current username.