Q: My IMessage works on my laptop(Macbook Air ) but not my iphone?

Hi jocemclap,

Thanks for using the Apple Support Communities! I'm sorry to hear you are having these issues with your iPhone. I'm a bit unclear on the exact nature of the issue you are having, but if you continue to have issues with Messages on your iPhone, you may find the information and troubleshooting steps outlined in the following articles helpful:

If you get an error when trying to activate iMessage or FaceTime - Apple Support

If you can't send or receive messages on your iPhone, iPad, or iPod touch - Apple Support

Regards