New menu is missing SharePoint Online document library template on IOS

Hi Ronny,

Thank you for providing the detailed information. Based on your description, the custom Excel template is configured and available in the desktop experience, while the issue occurs specifically when accessing the document library from the iOS mobile interface.

According to Microsoft’s documentation, the types of files available for creation in a document library depend on the templates that the site owner or administrator has associated with that library: Create a new file in a document library

However, I could not find official documentation confirming this iOS-specific behavior as a known issue. Since the template works correctly in the desktop modern interface, the library configuration appears to be recognized, and the difference may be related to the mobile rendering experience.

To further check where this difference may be occurring, I recommend going through the following checks:

1. On the desktop version of SharePoint, open the affected document library and confirm that the .xlsx template:
   • Appears under New.
   • Is enabled under New > Edit New menu.
   • Successfully creates a new workbook when selected.
2. On the iPhone, test the document library using:
   • Safari with Request Desktop Website enabled.
   • A Safari Private Browsing window.
   • The SharePoint mobile app and Safari separately, if both are available.
3. Test the same library using another iPhone or another authorized account. This can help determine whether the behavior is specific to the device or account, or whether it can be reproduced more broadly within the tenant.
4. If the template remains visible in Edit New menu but does not appear in the actual New menu only in the iOS mobile layout, please use the desktop interface or Request Desktop Website in Safari as a temporary workaround.

If the issue can be reproduced consistently on iOS, your IT administrator may need to open a support request. When submitting the request, please include the affected site and library URL, the iPhone model, iOS version, SharePoint app version if applicable, screenshots or a screen recording, and confirmation that the template works correctly in the desktop modern interface. This information will help the support team determine whether the behavior is a mobile limitation or an issue requiring further investigation.

They may refer to the following guide for detailed instructions on how to contact Microsoft Support and open a support case:

Get support - Microsoft 365 admin | Microsoft Learn

I hope the information above helps you verify the issue more clearly and gives you a suitable alternative while using SharePoint on iOS. If you have any questions or concerns, please let me know.