What’s the meaning of LTE cat 1 release 13?
I know LTE CAT M1 release 13.
It may be referring to LTE Cat 1 bis protocol. (Support of LTE Cat 1 with 1 RX antenna on device). Seems to be a recent hot topic for wearable devices.
In this article, you can find a good explanation on the role of Cat 1 and Cat 1 Bis:
What are 2G and 3G sunsets 
in the IoT world?
To sunset a network means it is retiring or shutting down.
Sunsetting old 2G and 3G infrastructures makes room for the more advanced 4G and 5G cellular technologies.
Read the article to find out more:
