Optimise for Devices

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Posted on by WillPage

2,337 Super User 2026 Season 1

I know when the preview feature "Optimize for Devices" is on, we can filter the controls to add to only those which are supported for device optimisation.

When a person opens a published app on a mobile device with this feature enabled, but there are controls which are not compatible, it throws a yellow warning banner:

Two questions:
1. Can we disable this warning?
2. Is there a tool we can use to assess an existing app for controls that aren't compatible? Nothing comes up in the app checker (stethoscope icon)?

Clearly they can detect the incompatible controls at run time, hence the warning, but not at design time? I don't want to build an app from scratch when a tool that shows me where the non-compliant controls are would save me a lot of time.

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CU25060357-0 37 on at

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There is no supported method to disable this banner at runtime when unsupported controls are used in an app run on a mobile device with "Optimize for Devices" enabled.

I don't know of a tool, but if you look at the insert panel you can toggle "Device optimized" controls, then cross-check what you have in the app. For larger apps, I'll download the msapp file, unzip it, and then search for the unsupported.

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WillPage 2,337 Super User 2026 Season 1 on at

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Thanks @CU25060357-0. It was a long shot since there doesn't seem to be anything from a Google search about this, but thanks for confirming. The popup is a show-stopper anyway - I only wanted one screen out about 8 in the app to use the native rendering, which I'd be happy to rebuild from scratch, but I'm certainly not going to re-do the whole app just to eliminate the warning.

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