A username lets people find you as @xxx without knowing your phone number, and gives you a shareable profile link.
Setup
- Settings → Username (some clients put it under Edit Profile);
- Enter 5-32 characters: letters, digits and underscores only;
- Once it shows as available, save it.
Naming tips
- Keep it consistent with your brand or other platforms;
- Avoid frequent changes — old links break immediately;
- If you prefer not to be found, restrict "find me by username" in privacy settings.