The useful distinction is between a cancelled planning record and the functionality Microsoft currently documents. A roadmap is a forecast, not an inventory of everything an app can do.
What the cancellation actually tells us
The update identifies Android and iOS, the General Availability release ring, and Worldwide Standard Multi-Tenant environments. It retains May 2025 as the estimated general-availability date. That historical estimate is not evidence that the feature launched then, nor does the release-ring field override the cancellation status.
The live roadmap page retrieved for item 485731 does not expose the individual entry or its cancellation explanation. Microsoft’s general roadmap policy says descriptions and dates are estimates, and records may be removed when features become generally available, are cancelled, or are postponed. Consequently, disappearance alone cannot establish which outcome occurred.
The cancellation wording provides no specific technical reason. It does not establish whether the original plan was replaced, reworked, or otherwise superseded.
How to use the documented mobile Search experience
Microsoft Support’s “Use Search on the go” describes this workflow:
- Open the Copilot mobile app.
- Select the navigation panel and choose Search.
- Browse recommended files, recent items, and other categories, or enter a search phrase.
- Narrow the results using the filter bar:
- Modified: recently updated files.
- Type: file format.
- Person: files shared or authored by colleagues.
- Select the file to preview or share it.
Success means finding the relevant file and opening its preview or sharing it—not necessarily entering an editor. Microsoft also describes keyword-based summaries, but does not specify every searchable repository, supported format, or indexing rule. This is not evidence that Search reaches every corner of a Microsoft 365 environment.
Finding, understanding, and editing are different tasks
Microsoft’s mobile-app changes guidance, updated in February 2026, provides the important practical context. For Microsoft 365 subscribers—including personal subscriptions and eligible work or school subscriptions where Copilot is available—Word, Excel, and PowerPoint files can be previewed, with Copilot Chat available to answer questions directly in the previewer. Editing redirects users to the corresponding Office mobile app; full file browsing and management redirects to OneDrive.
Non-subscribers can browse recent files in Search, but opening an Office file redirects to its dedicated app. Microsoft instructs those users to sign in there with the account that has access to the file. If an editing handoff requires another app, install the relevant Word, Excel, or PowerPoint app; use OneDrive for full file management.
These boundaries explain why finding a document and editing it may involve different screens—or different apps. They are documented behavior, not proof of a Search failure.
The takeaway
Do not treat cancellation of item 485731 as proof that Copilot mobile Search has been withdrawn. Microsoft still documents both file search and, for eligible subscribers, questions about Office files in the previewer. What remains unconfirmed is how those capabilities relate to the exact implementation originally promised by this roadmap entry.