Quick answer
Go to Settings and privacy > Account > Username, type a new one and tap Done. X says usernames can use only letters, numbers and underscores (no spaces) and be more than 4 and up to 15 characters. If it’s taken, X asks you to pick another. Your followers, DMs and replies stay, but your old username becomes available to anyone immediately.
Does this match what you see?
- X won’t accept the username you typed.
- X says the username is taken.
- You’re not sure what changing it does to your followers or DMs.
iPhone & iPadAndroidComputer (browser)
Based on X Help Center “How to change your X username”, supplied by the site owner, October 31, 2026 (phone, Android and Desktop tabs).
Why this happens: the possible causes
Why a new username may be refused.
| Problem | Fix |
|---|---|
| Wrong length or characters | Check the rules |
| Already in use | Pick another |
- Breaks the format rulesCheck this first
X says only letters, numbers and underscores, with no spaces.
- TakenCheck this first
X says if the username is taken, you’ll be prompted to choose another.
Try these 60-second checks first
- Use only letters, numbers and underscores, with no spaces.
- Keep it within X’s length limits (see rules).
How to fix it, step by step
Work through these in order. They start with the quickest, safest checks and only move to steps that sign you out or remove data later.
Fix 1: Change your username
X’s steps:
- Go to Settings and privacy and tap Account.
- Tap Username and type the new one. If it’s taken, X asks you to choose another.
- Tap Done.
- On x.com: click More in the navigation bar > Settings and privacy > Your account > Account information, enter your password, change the Username field and click Save.
X says changing your username doesn’t affect your followers, DMs or replies; followers just see the new name. X suggests telling followers first so they reply or message the new @name.
Did it work? Our check: your profile shows the new @username and your profile link uses it.
Did Fix 1 solve it?
Great, you fixed it with Fix 1. Tell us it worked, or bookmark this page in case it happens again.
Username rules
- X’s username page says it must be more than 4 characters and up to 15 characters. (X’s sign-up page words this as fewer than 15 characters.) Our tip: aim for 14 or fewer to be safe.
- Only letters A–Z, numbers 0–9 and underscores: no symbols, dashes or spaces.
- X says usernames can’t contain “Admin” or X’s own name unless they’re official X accounts.
- Looks free but X won’t accept it? X says it may belong to a suspended or deactivated account; those usernames aren’t immediately available. Visiting that @name shows a suspension or deactivation message.
The username you want is taken
X says some usernames are unavailable because they’re taken or for other reasons, and it will prompt you to choose another.
- X suggests adding an underscore before or after the name, like @lindsay_ or @_lindsay, and putting your real name in your display name.
- Inactive account has it? X says it can’t release inactive usernames at this time.
No username option in the app?
X’s pages disagree here: its change-username page gives steps in the app, but its common-username-issues page says changing your username isn’t currently supported in X’s mobile apps. If you can’t find it in the app, log in on x.com or mobile.x.com in your phone’s browser and change it there.
Move a username from one of your accounts to another
- Log in to the account that has the username you want and change it to something else (X suggests adding a number or underscore). X says this frees the username immediately.
- Log in to your other account and change its username to the one you just freed. Our tip: do this straight away, since anyone can take it once it’s free.
- X says deactivating an account doesn’t immediately free its username; it becomes available 30 days after deactivation.
Username vs display name
X says your display name is separate from your @username and can be playful, a business name or your real name. It can be up to 50 characters, and you can change it any time.
How to know it worked
- Our check: the new @username shows on your profile and you can log in with it.
Still not working? Your next steps
- Can’t log in after the change? See can’t log in to X.
Official help routes
SocialAppFix can’t see or change your account. For account decisions, recovery and appeals, only the platform’s own tools can help. These links go to the official sites.
Frequently asked questions
Will I lose followers if I change my X username?
No. X says changing your username doesn’t affect your followers, Direct Messages or replies.
Can I get my old X username back?
X says your old username becomes available to anyone immediately after you change it, so it may be taken.
How long can an X username be?
X’s username page says more than 4 and up to 15 characters, using letters, numbers and underscores only.
Did this solve your problem?
Your answer stays in your browser — nothing is sent or stored. The “tell us” link opens your own email app.
Out of date or didn’t work? Email us — never include passwords or codes.
Sources and how we checked this guide
We base steps on the platforms’ own help pages and the phone makers’ official guides. Menu names change often and can differ by device, app version and region. Where a platform page could not be independently read, we link it so you can check the current wording yourself.
- How to change your X username (external site, opens in a new tab)
- Signing up with X (external site, opens in a new tab)
- Help with common username issues (external site, opens in a new tab)
- Help with username registration (external site, opens in a new tab)
- How to reactivate your account (external site, opens in a new tab)
Last reviewed 31 October 2026 by the SocialAppFix editorial team against the sources above. Next scheduled review: 31 January 2027. How we write and review guides.
What changed
- 31 October 2026: First published.
SocialAppFix is an independent guide and is not affiliated with or endorsed by X Corp.. We never ask for passwords, login codes or payment to fix an account.