I'm guessing it would depend on what T&C's the user clicked "I accept" on when setting the phone up or getting the update. Whenever I get an update on iOS you

I'm guessing it would depend on what T&C's the user clicked "I accept" on when setting the phone up or getting the update. Whenever I get an update on iOS you get the lovely huge Apple T&Cs, which you have to accept to install the update. So if SilentCircle does the equivalent and put in there "in the event that this is running on a non-approved device, we'll disable the software" then I click "I agree" it would seem fair enough for them to so. If I were them I think playing it a little cooler would've been to pop-up "Hey this is a knock-off device, we're not letting you use all the cloud service and you're getting no updates from us" and leave it at that...