Comment by 542458
2 years ago
I think lockdown drops most iMessage features, so I would suspect the answer is yes. But as far as I can tell, lockdown prevents use of mdm, so it might be a net negative for security… instead, using the mdm policy that disables iMessage might be preferable.
Lockdown prevents new enrollment in MDM/adding profiles, but you can use an MDM you're already enrolled in. It's pretty good from a security perspective.
What I dislike is that it applies to all devices in your iCloud profile, and is overall pretty intrusive/annoying. Best practice if you're going to use it is probably to have multiple iCloud accounts (maybe in a "family" for license sharing), and Lockdown Mode one of them for the more secure devices. I tried using it for all of my devices last year and it was pretty unusable.
(Main pain point was how it handles unsecure wifi networks; I consider ~all networks insecure regardless of wifi encryption, but not being able to save or otherwise autoconnect to a hotel network with an iPad with nothing on it, etc. was the last straw. With a decent travel router it's fine.)
You can still supervise which allows for that all the same, IIRC