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Can the secondary user be linked to more than one primary user's mobile number?
No. As a security feature, the secondary user's account can only be linked to one mobile user at any one time.
Related questions
What is Multi-User SMS 2FA?
As a secondary user, how can I change my primary mobile number to someone else?
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How can I sign up for the Multi-user SMS 2FA service?
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Once the Multi-user SMS 2FA is activated, does the primary user get to see all the secondary user’s information?
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