Have you updated your phone lately?
No, I don't mean by buying the newest one.
I had mine checked out a few months ago. My reception was lagging.
I was asked if I had updated it.
I had no idea what they were talking about.
The young lady took my phone and in about 2 minutes, it was done.
I was told sometimes updates to the towers happen and you need to do an update on the phone to keep up.
I now update the 1st of every month. No issues ever since.