A Microsoft app for iOS and Android devices that enables authentication with two-factor verification, phone sign-in, and code generation
Hello ABBIE WILLIAMS,
Thanks for your question.
To use authenticator on a new phone you have to load up the old backup of the authenticatot. If you did not back it up to the cloud:
Depends on the type of account. You would need contact the admins of the accounts in question for work or school accounts if you do not have recovery methods.
You can also contact the support teams of any applications to assist you in resetting your credentials or reach out to support https://support.microsoft.com/en-us/topic/customer-service-phone-numbers-c0389ade-5640-e588-8b0e-28de8afeb3f2
You can mark it 'Accept Answer' and 'Upvote' if this helped you
Regards,
Abiola