Tyranicus
Senior member
It's nice how seamlessly iMessage works. I have a friend who just got a new iPhone 4S. I sent him a text from my iPhone 4. His response was through iMessage in the same conversation thread in the Messages app. His phone detected that my text came from an iPhone and used iMessage automatically in response. This works across cell networks too. I'm on AT&T, and he is on Verizon.