Basically I have just bought a new iPad mini I have never had one before and I don't own an iPhone I have been trying to set up iMessage so I can iMessage my bf who has an iPhone but I can't seem to get it to work it will only allow me to set up to send and recieve via my email not the mobile number for my cellular. Am I not able to use this or what? I'm so confused lol please anyone able to advise me where I'm going wrong?