How to turn iMessage off for a contact?

My friend just got a new non-Apple phone, and I can't seem to send her texts cause she previously had an iPhone. I've tried changing the 'type' of phone and even deleting her contact but nothing seems to work.

You have to tell your friend to deactivate her iMessage account by going to this link:

https://selfsolve.apple.com/...r-imessage

You can't do anything about that. She would have to disassociate her number with iMessage. Could Google search how to do that.

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