I took delivery of my Y in May. No problems texting with IOS 11 phone until yesterday. Phone wouldn’t connect at all (not just a texting issue). Was hung up so not able to even delete and re-add. Several hrs later, issue resolved with deleting and re-installing. Today, I get a message about texting only supported on IOS13+. Puzzled what happened between yesterday and today. No plans to upgrade my phone so extremely disappointed no longer supported/working.