Change Samsung account Phone number: (1) Open any web browser in your mobile of PC. (2) Navigate to Samsung Login Page. (3) Login with your ID and password in Samsung Account. (yon can click forget password) (4) Select My Account Info. (5) Click on Profile option. (6) Go to Samsung Account Settings. (7) Select Phone Number ID. (8) Provide new phone number, you want to associate with your Samsung account. (9) Click on Change. (10) Verify Phone Number using OTP sent on your new phone number. You have all done and changed Samsung account phone number successfully. You can also refer the demo pictures given in the post above.