Thanks for that follow-up! What a hassle. At least you're getting some decent support from the T-Mo tech people.UPDATE (final ): My phone (and my bride's) started acting up with abandon a few days ago. Specifically, network issues. I missed a call from my attorney, my brother, and the bride missed a call from our son. Yesterday with TMO technical support, their only solution was the information that a new tower is scheduled to be installed in our area first quarter of 2024. Obviously, that isn't a solution. Secondarily, the tech walked me through the following steps: settings > connections > mobile networks > network operators > select automatically (default toggled on).
He directed me to toggle that off, and when the TMO network populated in the list below to select that.
Restart the device.
After 3 hours, or so, go back in and toggle on Select Automatically. (I did this on both phones)
By doing this, we "reregistered" with the TMO network.
Meanwhile, he performed a network refresh for both of our devices. He was persuaded that we would see marked improvement. Interestingly, while I was on the phone with him, he was looking at my bride's device and noticed she was having real difficulty/instability with the network.
IF this fixes the problem, this is my last post on this subject. If not, we'll pick back up where we started. I hope this information is helpful.