No amount of sysadminning was going to save you from state-sponsored zero-day attacks.
So they do need that competence if they are to be sysadmins.
For a phone though, there is an external homogeneity that could make setting it up as a honeypot easier. I'm not incredibly familiar with phone OSs, but I see it as an interesting opportunity.
Surely it should only be generally possible if you have special monitoring.