We are excited to announce that we have launched our new Hive Community! HiveNation will remain as an archive, but all new posts, discussions, and articles will be created on Hive Community. You can visit our new community at thehivecommunity.aerohive.com
You probably need to use "Client Classification Policy". If it's an iPhone, you move the device to another user profile, using not usable VLAN. The problem is that you cannot do that only for iPhone but for iPod/iPhone/iPad.