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The only method to deactivate a Samsung account from a phone without a password is to contact Samsung to locate and delete the account. If you wish to begin the procedure on your Samsung phone, follow the comprehensive instructions below.

1. Unlock your phone, then launch the Samsung phone settings app from the app drawer.
2. Scroll down until you see "Cloud and Accounts." Also, on the next page, select the "Accounts" tab.
3. Then, from the choices, select "Samsung Accounts" and then "My profile." When prompted to enter your email address and password on the account screen, select "Forgot your ID and Password." A popup will appear on the screen; from there, select your preferred browser.
4. A prompted browser prompts you to enter your ID and password, as well as your email address. After that, Samsung will send you an email with a link to reset your password.
5. Return to your Samsung account settings and select "Remove Account" from the top-right menu bar.