LTE-M
A low-power cellular technology (also called LTE Cat-M1) for IoT devices that need moderate data, mobility and sometimes voice.
LTE-M runs on 4G networks with a narrow 1.4 MHz channel. It supports handover between cells, so it suits devices on the move such as trackers and wearables, with data rates around 1 Mbps.
Why it matters for business
LTE-M balances battery life and capability, and it is widely supported for roaming. It usually costs a little more in module price and power than NB-IoT.