Another observation-

I commented way up in the thread that I didn't get good reception with the bluetooth mic- When I got my new phone- suddenly everyone I call hears me better!

The last one was a motorola flip phone that I just hated, and the new Samsung isn't getting complaints anymore. I thought nothing of it until 2 different people said it sounded better, and I can tell that what I hear is clearer too. I didn't think changing phones would help but it did.

It may be that it has an older BT protocol. My old phone would display my signal strength but not the battery level. The new one does both so maybe the software has improved.