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Authenticator app question

Ashish Mathur 101.8K Reputation points Volunteer Moderator
2026-01-18T23:21:54.0733333+00:00

Hi,

Will i face any issues with the Authenticator app installed on my Android phone if i change the SIM card of the phone from 4G to 5G? The device and phone number will remain the same.

Thank you.

Microsoft 365 and Office | Subscription, account, billing | For business | Android
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  1. Anonymous
    2026-01-19T00:29:09.8066667+00:00

    Hi @Ashish Mathur

    Thank you for posting your question in the Q&A Forum.

    If you change your SIM card from 4G to 5G, the Microsoft Authenticator app will continue to work normally. The app keeps your accounts stored securely on your phone and does not depend on the type of SIM card you use. Since your device and phone number remain the same, there will be no disruption.

    When you sign in, you can either approve a notification if your phone is online, or enter the one‑time passcode shown in the app. Both options remain available after the SIM change.

    You can go ahead with the SIM upgrade confidently, knowing that Authenticator will keep functioning as expected.

    If you have any further questions or encounter any issues, please don’t hesitate to reach out again, we’re here to help.

    If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".     

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    1 person found this answer helpful.

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  1. Q&A Assist
    2026-01-18T23:22:02.3633333+00:00
    AI generated content. This question contains an answer created with AI from Q&A Assist. Learn more

    Changing the SIM card from 4G to 5G while keeping the same device and phone number should not cause any issues with the Microsoft Authenticator app installed on your Android phone. The app primarily relies on the device's operating system and internet connectivity rather than the specific mobile network technology (4G or 5G). As long as your device remains connected to the internet, you should be able to use the Authenticator app without any problems.

    References:

    1 person found this answer helpful.

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