I wrote last month about CEVA’s Dragonfly-NB1 platform, a single-chip IoT solution supporting narrow-band cellular communication; this can meet aggressive total solution price-targets for high-volume deployment, long-range access and the low-power needed for 10+ year battery lifetimes.

https://www.semiwiki.com/forum/content/7575-dragonfly-nb2-you-can-have-all-your-iot-device.html