Invalid SIM message appears sometimes

Thanks! I looked for something like that but I guess I didn't word my request properly. I did shut the phone off and then back on and that helped, as it has in the past. I only does it a couple of times a year, so not a big deal, just weird. I think it's time for a new phone anyway as mine also decided to go silent whenever it feels like it - no ring tones, no vibration, and no flashing light. Even no notification sent to my watch.

Thanks again for your speedy response!

Linda F