LTE-M
Cellular service made for devices: low power, moderate speed, works while moving.
LTE-M (LTE Cat-M1) is a low-power cellular standard for devices with moderate data rates, mobility and voice support, used under a data plan.
Examples
LTE-M suits a tracker or wearable that moves between cells, with about 1 Mbit/s and tens to hundreds of ms of latency.
An ESP32 drives an LTE-M module with AT commands such as
AT+CSQandAT+CEREG?.