M2M (Machine-to-Machine) refers to direct communication between devices, often a device sending data to a central system over a cellular SIM — like a vehicle tracker or a smart meter. IoT (Internet of Things) is the broader concept of connected devices, sensors and platforms working together over the internet. In practice the terms overlap; on connectivity, M2M usually means the SIMs and networks that link your devices.

It depends on range, power, data and mobility. Cellular IoT/M2M suits devices that move or are spread across wide areas (fleets, metering, POS). LoRaWAN suits dense, battery-powered sensors on a site or across a city, where data is tiny but battery life must be years. Mesh Wi-Fi suits high-bandwidth devices like cameras within a building or campus. Many deployments combine them — see the comparison table above, and we'll help you pick the right mix.

An M2M SIM is a SIM designed for devices rather than phones — often more rugged, with features like multi-network roaming and remote management. A SIM management platform is the dashboard where you activate, monitor, set data limits, diagnose and bar SIMs across your whole estate. At scale, this control is as important as the connectivity itself, and we factor it into every comparison.

Both are low-power cellular technologies for IoT. NB-IoT is optimised for very low data, deep indoor coverage and long battery life — ideal for static sensors and meters. LTE-M supports higher data rates and mobility, so it suits moving assets and devices that need a bit more bandwidth or even voice. We help you choose based on your devices and how they're used.

Yes — the Department of Telecommunications (DoT) has guidelines for M2M connectivity, including KYC requirements and M2M Service Provider registration in some cases. Reputable operators handle the compliance as part of onboarding. Connectivity is usually priced per SIM per month by data, with pooled-data options and lower per-device cost at volume; LoRa and mesh shift cost toward gateways or nodes instead. Figures shown here are illustrative, and this is general guidance rather than legal advice.