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Copilot Studio
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Copilot studio agent stopped responding in Teams channel in mobile phone

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Posted on by YM-27122000-0 2
I have business users reporting same issue: the Copilot studio agent shared with them responds in Teams channel when using their laptop, however it stopped responding when they interact with it from their phone. Why is this happening and what can I do to have it stable for them?
 
Categories:
Publish & channel management
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  • Suggested answer
    Sunil Kumar Pashikanti Profile Picture
    Sunil Kumar Pashikanti 2,318 Moderator on at
     
    This is a known Teams mobile limitation with Copilot Studio bots.
    If it works on desktop but not mobile, it is usually not a logic issue but a client-side rendering or auth constraint.

    Most common causes:
    1. Adaptive Cards (primary reason)
    Teams mobile does not fully support newer or complex card layouts.
    Try reducing the schema version to 1.3 or 1.4 and simplify the structure.
    2. Authentication / Conditional Access
    If your bot uses SSO or user context, mobile can fail due to Intune or Conditional Access policies blocking token flow.
    3. Channel sync issues
    Re-publish the bot and re-sync the Teams channel. Re-adding the app often helps.
    4. Test with plain text
    Replace cards with simple text temporarily. If mobile starts responding, the issue is rendering-related.

    Summary:
    Start by simplifying responses and testing without auth. In most cases, this is due to Adaptive Card compatibility or mobile security constraints, not the agent itself.
     
    ✅ If one of the responses here solved your issue, please mark it as Accepted so others facing the same problem can benefit as well.
    👍 If this or any other reply here helped you, feel free to give it a Like. It helps others and is always appreciated.

    Sunil Kumar Pashikanti, Moderator
    Blog: https://sunilpashikanti.com/posts/
  • Suggested answer
    Sayali-MSFT Profile Picture
    Sayali-MSFT Microsoft Employee on at
    Hello YM-27122000-0 ,
    This behavior is often seen when the agent works correctly in Teams desktop but fails on Teams mobile due to mobile client caching, authentication, app installation state, or Teams policy inconsistencies rather than an issue with the Copilot Studio agent itself. Ensure affected users have the latest Teams mobile app, sign out/sign back in, clear app cache, and reinstall the agent. Also verify that the agent is properly published, shared, and allowed through Teams/Power Platform app policies.
    If the issue persists, collect Teams mobile logs, app version, device details, and timestamps for further investigation.

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