Q: My iphone has a different apple id than my computer - how can I connect the two?

I have an apple id on my computer, and I have iCloud - but my iPhone has a different apple id - is there anyway that I can change my iphone apple id so it is the same as my computer?  I can't do the iTunes match because it says I am not subscribed, but according to my computer, I am subscribed!!

Any suggestions?