My text messages are shared on another device, a desktop. How do I limit messages to my phone?
Text messages are now being shared via Family Sharing. How do I limit texts to my phone?
iPhone 11
No it is not via Family sharing. Where ever you have used the same Apple ID the messages can be forwarded..
Settings > Messages > Text Message Forwarding > [All devices with same apple id will be listed here, deselect any device where you do not want the text to be forwarded]