How do I add a second 2FA device using Microsoft Authentication on my iPhone?

[BAinUSA]

I have Dropbox on my Mac with 2FA using Microsoft Authenticator on my iPhone.  As backup I want to put the Dropbox account into MS Authenticator on a second iPhone but I cannot figure out how to do that.  Can anyone explain.

Thank you.

[Здравко]

Hi @BAinUSA,

Take a look here:

https://go.microsoft.com/fwlink/p/?linkid=2168543&clcid=0x409&culture=en-us&country=us

By the way to authenticate anything in any authenticator, save your initial "seed" (represented either as a code or QR image) for usage on any authenticator further. Keep it on a safe place!

Hope this helps.