If you delete it from JAMF, the devices will stop talking to your MDM instance.

Have you looked into sending the "Enable Lost Mode" command? If you have ABM/DEP set up, you can set up the pre-enrollment to require username/password 

thanks, I think that would be the better option. We just want to clean up some devices from JAMF.

@JayKay27 I don't use Jamf Pro to manage iOS devices, so I'm not certain this applies to them, but for Macs you can stage a Lock command then turn off the "Allow Jamf Pro to perform management tasks" setting. If the Mac does check in it will Lock, but it will no longer appear in Smart Groups or count against your license.

@sdagley Interesting. It almost sounds like it shouldn't work. I'll have to try that.

I locked my iPhone but don't see the option to "Allow Jamf Pro to perform management tasks" under the Management tab. Maybe "Unmanage Device?"

unmanage device sounds like it releases the device for anyone to use. If someone was able to wipe device, would that mean they are able to just wipe it and use it again without our JAMF updating? We want to just send a full hard lock on it so the phone is essentially bricked and you can't even restore/ reset it, and be able to just delete it from our JAMF inventory.

I'd say Apple Business Manager and Enable Lost Mode are your options.