Q: I accidentally erased my phone while using the Find my Iphone app

I accidentally erased my phone while using the Find my Iphone app. Now im trying to unlock it as my phone is also sim locked but this is the message that comes up :

"Your iphone could not be activated because the activation server is temporarily unavailable. Try connecting Your iPhone to iTunes to activate it, or try again in a couple of minutes."

This keeps repeating and there doesnàt seem to be anz alternative as iTunes isnàt letting me connect either.