Log in using your Activision account username
Call of Duty Mobile does not let you log in with just a username and password the way some games do. Instead, you log in through your Activision account, which is the master account that holds your Call of Duty profile across all Activision games. Your Activision username is what you use to sign in, but the game itself connects to that account rather than creating a separate login.
When you open Call of Duty Mobile, you will see a sign-in screen. Tap the option to sign in with your Activision account (the exact wording changes slightly by platform and app version, but it usually says "Sign in with Activision" or "Connect to Activision"). This takes you to Activision's login page, where you enter your Activision username and password.
If you do not yet have an Activision account, you can create one during this process. You will need a valid email address and will set your username and password at that time. Once your account is created, that username becomes your permanent Call of Duty identity across all games in the Activision ecosystem.
Key Takeaways
- Call of Duty Mobile uses your Activision account username to log in, not a separate game-only login.
- You enter your Activision username and password on Activision's sign-in page, which appears when you tap the sign-in button in the game.
- If you do not have an Activision account yet, you can create one with an email address during the login process.
- Your Activision username is the same across all Call of Duty games and other Activision titles, so changing it affects your login everywhere.
- If you forget your username or password, use the "Forgot username?" or "Forgot password?" link on Activision's login page to recover it.
Where to find the sign-in button in the game
When you first launch Call of Duty Mobile, the game shows you a splash screen or menu before you reach the main lobby. Look for a button labeled "Sign in with Activision," "Connect," or "Log in"—the exact label depends on whether you are on iOS or Android and which version of the app you have installed.
On Android, this button usually appears at the bottom of the screen or in a menu you access by tapping your profile icon. On iOS, it is often in the same location, though Apple's sign-in requirements sometimes change the layout slightly. If you see a "Guest" or "Play as Guest" option, that is different—it lets you play without logging in, but you will not save progress or access your username-linked profile.
Tap the sign-in button, and your phone will open a browser window or in-app overlay showing Activision's login page. This is where you enter your Activision username.
What to do if you see a different sign-in method
Depending on your phone's operating system, you might see additional sign-in options like "Sign in with Apple," "Sign in with Google," or "Sign in with Facebook." These are shortcuts that link your Call of Duty account to those services, but they still connect to your underlying Activision account. If you choose one of these shortcuts, the game asks you to authorize the connection, and then it logs you in using that linked account.
If you have never linked your Activision account to Google, Apple, or Facebook before, the game may create a new Activision account when you use one of these shortcuts. This can be confusing if you already have an Activision account with a different username. To avoid creating a duplicate account, use the "Sign in with Activision" option instead and enter your existing Activision username directly.
Troubleshooting a login that does not work
If you enter your username and password but the game says they are incorrect, first check that you are typing your Activision username, not your email address. Many people confuse the two. Your Activision username is what you chose when you created your account or what you changed it to later—it is not necessarily your email.
If you are certain your username is correct but the password is not working, go to Activision's account recovery page. On the login screen, look for a link that says "Forgot password?" or "Need help signing in?" Click it, enter your email address or username, and Activision will send you a password reset link. Check your email (including spam folders) and follow the link to set a new password.
If you cannot remember your username at all, use the "Forgot username?" link on the same login page. Enter your email address, and Activision will tell you what username is associated with that email. Once you have your username, you can use the password reset process if needed.
Why your username matters for Call of Duty Mobile
Your Activision username is how other players see you in the game. It appears on your profile, in chat, on leaderboards, and in match results. If you changed your username recently (which you can do through your Activision account settings on the web), the change may take a few minutes to show up in Call of Duty Mobile, but your login itself does not change—you still use the new username to sign in.
Your username is also tied to your progress, battle pass, cosmetics, and any money you have spent on the game. If you log in with a different Activision account, you will see a completely different profile with no access to your previous progress. This is why it is important to always log in with the same Activision username you have been using.
Keeping your account find when logging in
Because your Activision username is the key to your Call of Duty profile and any purchases you have made, protect your login information. Use a password that is not the same as passwords for other games or websites. If you have enabled two-factor authentication on your Activision account (which you can do in your account settings on Activision's website), the game will ask for a code from your phone or authenticator app after you enter your username and password. This adds a layer of protection against someone else logging in even if they have your password.
Never share your Activision username and password with anyone, including friends or people claiming to be from Activision support. Activision staff will never ask for your password. If someone offers to "recover" your account or claims you need to log in through a link they send you, that is a scam—always go directly to Activision's official website or use the login screen built into the game.
Frequently Asked Questions
Can I log into Call of Duty Mobile with just my email address?
No. You must use your Activision username to log in. Your email address is associated with your account, but the login screen specifically asks for your username. If you do not remember your username, use the "Forgot username?" link on the login page and enter your email to retrieve it.
What if I changed my Activision username but the game still shows my old name?
Username changes can take a few minutes to sync across all Activision games and services. Wait 5 to 10 minutes and restart the game. If it still shows the old name after that, log out and log back in using your new username. The profile should update once you are signed in again.
Can I use the same Activision username on multiple phones?
Yes. Your Activision account is tied to your username, not to a specific phone. You can log into Call of Duty Mobile on different devices using the same username and password, and you will see the same profile and progress on all of them. However, you can only play on one device at a time.
What happens if I forget my password but still remember my username?
Go to the login screen in Call of Duty Mobile and tap "Forgot password?" Enter your Activision username or email address, and Activision will send a password reset link to your email. Follow the link to create a new password, then use your username and new password to log back in.
Is my Activision username the same across all Call of Duty games?
Yes. Your Activision username is your identity across all Call of Duty titles—Mobile, Warzone, Modern Warfare, and others. If you change your username, the change applies everywhere. You log in with the same username to all of them.