This video covers everything you need to know about iCloud activation bypasses.
DNS server bypass
Setup.app crashes on the latest iOS 9.2.1 – 9.3
Explanation on the 3 methods for full removal of iCloud activation
I remember that this bypass does not work anymore with ios 9.3.3. The bypass can only use the iPod functions, but not the phone!
it is recommended to remove iCloud permanently.