What is LTE Cat-1
Quick definition
LTE Cat-1 is the LTE device category targeted at general-purpose IoT: up to 10 Mbps down, 5 Mbps up, voice support, and works on any 4G network worldwide. Its Cat-1 bis variant runs on a single antenna, cutting hardware cost. It is the workhorse behind POS terminals, alarms, gateways, and low-bitrate CCTV.
Why it is still the best-seller
Cat-1 works on any LTE network without special carrier support. While LTE-M and NB-IoT need prepared networks, Cat-1 goes wherever there is 4G. That makes it unbeatable for international and 3G replacement deployments.
When NOT to use Cat-1
When you need multi-year battery with no recharge (NB-IoT or LTE-M with PSM is better), or when you need real broadband (Cat-4 or higher). Cat-1 owns the middle, not the extremes.
FAQ
Are Cat-1 and Cat-1 bis the same?+
Almost. Cat-1 bis uses one RX antenna instead of two, reducing module cost and BOM. Performance is similar for typical IoT use.
Does Cat-1 work on LTE-M-only networks?+
If the network advertises standard LTE (most do), yes. On a dedicated LTE-M network with no normal LTE core, no.
Related terms
What is LTE-M
LTE-M (also LTE Cat-M1) is an LTE variant designed for IoT: moderate bandwidth (up to 1 Mbps), very low power, voice support, and real cell-to-cell mobility. It is the sweet spot between NB-IoT (cheaper but static) and Cat-1 (faster but power-hungry).
What is NB-IoT
NB-IoT (Narrowband IoT) is a 4G/5G LPWA technology optimized for small messages from static, multi-year battery devices. It runs in a 200 kHz sub-band and prioritizes deep coverage and extreme power efficiency over throughput.
What is MFF2
MFF2 (Machine-to-Machine Form Factor 2) is the solderable SIM: a 6x5 mm chip mounted directly on the PCB, no tray or socket. It is the de-facto standard in industrial IoT, automotive, and any device facing vibration, humidity, or extreme temperatures.