I received this also and don’t know why this happened?

I also received this message this morning and I’m not sure why.

We also received the same message this morning

I also had the same issue this morning. I have the iPhone 14 Pro. I restarted it and it seems to be working now though. I just tried to call someone on LTE and it worked after restarting my phone. 

i woke up to this message as well.  I have an iphone x, so if nothing else, at least coming here and seeing that someone with a newer model has the same message reassures me that it’s not my ancient phone. it’s still a worrying popup to have gotten though