How to change your Samsung Account mobile number using two-step phone verification
Your Samsung account may contain vital information, so it is important to be protected with two-step verification. When it’s set up, you'll get a prompt or text message on a mobile device to confirm that it is you logging in. If you want to update your phone number, you can do so via your smartphone, tablet or laptop/PC.
PC
If you can’t log into your Samsung Account because you have a new phone number, please try the following:
Remove previous number
Please note: To delete a number on your PC, go to Profile > Edit personal information > Click Delete next to the phone number you’d like to remove from your account.
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