Hello Javier,
Based on the description of the issue I am not clear how you are passing user credential to Afaria? I recommend specifying the following format:
DomainName\Userid
Password
The domain name mush match domain listed under security page in Server Settings.
I suspect Android logic in Authentication is assuming same domain as your Enrollment Server where iOS is not. Specifying DomainName will take care of this, if this is the issue indeed.
Let us know.
Thanks,
Aziz
SAP Support