It started about the time I activated. Maybe 2 or 3 weeks ago. It's a Samsung Galaxy Note 8 I believe. It's when people call me or I them. They are on the Verizon network as well. Call cannot be completed as dialed. Announcement 4. I have checked the numbers in my contacts to make sure that they are programmed correctly. I was using this phone for 2 years and it was great. I switched to a different phone for maybe 30 days and came back to this one.