Hello @Laudug! Thanks for reaching out to us here and welcome to the Xfinity forums! I'm sorry to hear about the issues you're experiencing with your mobile devices ringing when your home phone rings, but I can definitely investigate this further with you. If you would be so kind as to send me a private message with your first and last name, as well as your service address so I can assist.
To send a private message, click my name "ComcastPeter", then click "send a message".