@BetatestR Thanks for posting in our Q&A.
To clarify this issue, we appreciate your help to collect some information:
- Please show the screen shot of the iOS device's profile under Devices > Enrollment program tokens > select the target token > profiles.
- Did you use this method to set wallpaper on iOS device?
- If yes, please try to assign this device feature profile to a device group(which has the ADE supervised iOS device) and check if it is successful.
If there is anything update, feel free to let us know.
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