If I understand correctly, iMessage will automatically revert to sending by iMessage if the other person has iMessage as well. Otherwise it will send it as an sms. Well what happens if a friend has an iPad and a blackberry? I have their email, which I know for a fact is used for their apple iD, and their phone number listed under their contact name. Obviously I'll be trying to get a hold of them on their blackberry more. It's a wifi iPad so they won't have it all the time. Do I have to make 2 separate contact entries? Does anyone know what happens in this situation?