skimonkey said:My send button is also grey if you do not put an email in to who you are sending. You have to make sure you are sending messages to others within the apple network with iOS 5. Try to put their email/phone number and see if the send button turns blue.
stuardy1 said:Still cannot get this to work, I have Sending a iMessage to both my wife and a friend whom I have sent iMessages to from my iPhone but it's still the same thing, the button is greyed out
deannerz said:So can you only use I-message with a 4S or higher? my boyfriend has an iphone 4 and i have the ipad 2. I noticed i cannot send messages to him. How do I fix this? thanks!