iphone 4 activation
hii
iphone 4 , after restored it by iTunes , and when i tried to activate it by wifi , it tell me " your iphone could not be activated because the activation server is temporarily unavailable"
so i connect to itunes to activate it and tell me. " There is no sim card in the iPhone you are attempting to activate. Please disconnect and insert a sim card into the phone."
i tried to enter recovery mode and the same problem ,