So, I paid off a Galaxy s9 plus to upgrade to an s10plus. I gave my husband my paid off, Xfinity mobile, s9 plus. Popped the SIM card from his broken Xfinity phone. Now his voicemail isnt working. How stupud is this!? I called customer service and since I paid off the s9plus, it becomes a foreign device. What the heck, Xfinity? I was told by customer service that the phone I paid off, that he now uses, becomes basically a "bring your own device?" I'm so irritated! Enough to consider leaving Xfinity.