Sign in with your Activision account on the login screen

When you open Call of Duty Mobile, the first screen you see is the login prompt. Tap Sign in with Activision Account — this is the option that lets you use your username rather than signing in through Facebook, Google, or Apple.

The game will open your device's web browser and take you to the Activision login page. Enter the username you created or changed on the Activision website, then enter your password. Both are case-sensitive, so check that caps lock is off unless your username actually contains capital letters.

After you tap the login button, the browser will close and you'll return to the game. The game loads your account data — this can take 10 to 30 seconds on a slower connection. You'll see your username and rank appear on the main menu once the connection is complete.

Key Takeaways

  • Tap Sign in with Activision Account on the login screen, not the social media options, to use your username.
  • Your username and password are case-sensitive, so type them exactly as you set them up on the Activision website.
  • The game opens your device's web browser to log you in, then closes it automatically once authentication is complete.
  • If the login fails, check that you're using your username (not your email) and that your caps lock is off.
  • You must have an active internet connection to log in; the game cannot store your login offline.

What to do if the login screen doesn't appear

If you open Call of Duty Mobile and go straight to the main menu without seeing a login prompt, you're already signed in under a different account. The game remembers your last login and skips the login screen on future launches.

To sign out and log in with a different username, go to Settings in the main menu, scroll down to Account, and tap Sign Out. The next time you launch the game, the login screen will appear. Then follow the steps above to sign in with your username.

Troubleshooting a failed login

If you enter your username and password but the game says "Login Failed" or "Invalid Credentials," the most common cause is typing your username wrong. Double-check that you're entering your username, not your email address — these are different fields on the Activision website. Also verify that caps lock is off and that there are no extra spaces before or after your username.

If you're certain your username and password are correct, your Activision account may have been locked for security reasons. Go to the Activision website directly (activision.com), click Sign In at the top right, and try to log in there. If the website also rejects your credentials, click Forgot Password? to reset it. Once you've reset your password on the website, try logging into Call of Duty Mobile again with your username and new password.

If the login screen itself won't load or the browser won't open, restart your device and make sure you have a working internet connection. Try logging in again. If the problem persists, uninstall and reinstall Call of Duty Mobile — this clears out corrupted login files that sometimes prevent the browser from launching.

Why the game uses your Activision account

Call of Duty Mobile stores your progress, weapons, and rank on Activision's servers, not on your device. This means your account works on any phone or tablet — if you log in on a friend's device, you'll see all your progress. It also means you need to log in every time you play, because the game has to check with Activision's servers to load your data.

The username you use is the same one across all Call of Duty games — Mobile, Warzone, and the main Call of Duty titles on console. If you've played any other Call of Duty game, your username is already set up and you can use it to log into Mobile.

Switching to a different Activision account

If you want to play Call of Duty Mobile under a different username, you have two options. The first is to sign out (as described above) and log in with a different Activision account that already exists. The second is to create a new Activision account on the website, then sign out of Mobile and log in with that new username.

Be aware that progress does not transfer between accounts. If you sign out and log in with a different username, you'll start at rank 1 with no weapons or cosmetics. Your old account's progress stays on that account — it doesn't disappear, but you won't see it when you're logged in under the new username.

Frequently Asked Questions

Can I log in with my email instead of my username?

No. Call of Duty Mobile requires your username, not your email. If you don't remember your username, go to activision.com, click Sign In, and log in with your email and password. Your username will be displayed on your account page.

Why does the game ask me to log in every time I play?

Call of Duty Mobile checks your account with Activision's servers each time you launch the game to load your progress and rank. This is normal and happens on every device. The game does not stay logged in offline.

What if I forgot my Activision password?

Go to activision.com, click Sign In, and click Forgot Password. Enter your email address and follow the reset link sent to your inbox. Once you've set a new password, use it to log into Call of Duty Mobile with your username.

Can I use my Facebook or Google account instead of my username?

Yes. The login screen offers Sign in with Facebook, Google, and Apple as alternatives. These let you log in without typing a username and password. However, your Activision username is still tied to your account — you can switch between login methods anytime.

Does my username have to match my in-game name?

No. Your Activision username is what you use to log in. Your in-game name (the one other players see) is set separately in the game's settings and can be different from your username.