@Jay Arson Thanks for posting in our Q&A.
For this issue, there is no built-in setting to make it via intune. Based on my research, I found that someone provided a method to add an iOS full screen web link via Intune. Please refer to the following link:
https://morethanpatches.com/2022/05/05/add-an-ios-full-screen-web-link-in-microsoft-intune/
Note: Non-Microsoft link, just for the reference.
For android devices, I didn't find some helpful information to make it.
Thanks for your understanding.
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