Teltonika FMB920 vs FMC920: Which Tracker Is Right for You?

If you're looking for a compact, reliable GPS tracker for light vehicle tracking in the UK, the Teltonika FMB920 and FMC920 are two of the most popular choices on the market. They share the same compact form factor, the same feature set and almost identical specifications — with one critical difference: the FMB920 runs on 2G, while the FMC920 runs on 4G LTE.

In this guide we break down everything you need to know about both devices to help you make the right choice for your fleet.

What Do the FMB920 and FMC920 Have in Common?

Before diving into the differences, it's worth understanding just how similar these two devices are. Both are part of Teltonika's FMx920 family — compact, versatile trackers designed for light vehicle tracking, car rental, stolen vehicle recovery and fleet telematics. Here's what they share:

Same ultra-compact form factor — both measure 79 x 43 x 12mm and weigh just 54g, making them easy to install and conceal in virtually any light vehicle

Same GNSS engine — both support GPS, GLONASS, Galileo and BeiDou for under 3 metre accuracy in real-time positioning

Same Bluetooth 4.0 — both connect to external BLE sensors including temperature probes, humidity sensors and driver identification accessories

Same backup battery — both feature a 170mAh Li-ion battery that keeps the device operational if vehicle power is cut, essential for tamper and theft detection

Same remote immobiliser — both support a digital output for remote vehicle disabling via your fleet management platform

Same crash and tow detection — both have a built-in accelerometer that triggers alerts on impact or unauthorised movement

Same jamming detection — both alert when GPS signal interference is detected

Same 128MB internal memory — both store up to 422,400 records when out of GSM coverage

Same IP54 rating — both are dust and splash resistant for reliable operation in all UK weather conditions

Same over-the-air firmware updates — both support remote firmware updates via Teltonika FOTA Web

The Key Difference: 2G vs 4G

The one difference that matters comes down to cellular connectivity.

The FMB920 uses 2G GSM/GPRS — the older, established mobile network technology. The FMC920 uses 4G LTE Cat 1, the modern standard, which brings faster data transmission speeds, lower latency and more reliable connectivity on today's UK networks.

In practical terms for GPS tracking, this difference affects three things:

Data upload speed — the FMC920 transmits location and event data to your telematics server faster than the FMB920, which can mean more responsive live tracking on your platform

Network reliability — 4G has broader and more consistent indoor coverage in many UK areas, making the FMC920 more reliable in urban environments, car parks and built-up areas where 2G signal can be patchy

Future-proofing — 2G networks are being progressively decommissioned in many markets around the world. While the UK's 2G timeline is not yet confirmed, operators who want to deploy hardware with a longer service life should consider the move to 4G now

BLE Driver Identification Keypad Compatibility

Both the FMB920 and FMC920 are fully compatible with the Tracking Hardware UK BLE driver identification keypad range. This means that regardless of which device you choose, you can add wireless driver identification to your fleet without any wiring.

Drivers simply enter their unique PIN or present their card on the BLE keypad at the start of each trip. The driver ID is instantly logged alongside all GPS tracking, event and telematics data — giving fleet managers complete visibility of who was driving each vehicle, when and where.

This is a significant advantage over wired iButton systems, which require additional cabling and are more complex to install. The BLE keypad approach works seamlessly with both the FMB920 and FMC920 via their shared Bluetooth 4.0 interface, making driver accountability straightforward to implement across any size of fleet.

Contact Tracking Hardware UK to find out more about keypad and tracker bundle pricing.

FMB920 vs FMC920 — Side by Side

Feature	FMB920	FMC920
Cellular network	2G GSM/GPRS	4G LTE Cat 1 + 2G fallback
Data speed	Standard	Faster, lower latency
GNSS	GPS, GLONASS, Galileo, BeiDou	GPS, GLONASS, Galileo, BeiDou
Bluetooth	4.0 BLE	4.0 BLE
Backup battery	170mAh Li-ion	170mAh Li-ion
Dimensions	79 x 43 x 12mm	79 x 43 x 12mm
Weight	54g	54g
IP rating	IP54	IP54
BLE keypad compatible	Yes	Yes
Future-proof network	No	Yes
Price	Lower	Slightly higher

Which One Should You Choose?

Choose the FMB920 if:

• You're deploying in areas with stable, reliable 2G coverage

• Cost per unit is the primary consideration for a large deployment

• You need a proven, widely supported device for a short to medium term project

Choose the FMC920 if:

• You want future-proof hardware on modern 4G networks

• You operate in urban areas where 4G coverage is more reliable than 2G

• You need faster data transmission for more responsive live tracking

• You're planning a long-term fleet deployment and want to avoid future hardware replacement costs

For most new UK fleet deployments in 2025 and beyond, we recommend the FMC920 as the default choice. The price difference between the two devices is small, and the benefits of 4G connectivity — particularly future-proofing — make it the smarter long-term investment.

Buy the FMB920 and FMC920 from Tracking Hardware UK

Tracking Hardware UK is an official Teltonika distributor, supplying the full range of Teltonika GPS trackers and telematics devices to fleet operators, telematics service providers and resellers across the UK and internationally.

Both the FMB920 and FMC920 are held in stock at our London warehouse and are available for same-day dispatch. We offer volume pricing and trade accounts for businesses buying in quantity, and our team is on hand to help you choose the right device for your specific application.

Contact us today to discuss your requirements or request a quote.

Frequently Asked Questions

Can I use the same SIM card in the FMB920 and FMC920?

Both devices use a standard nano SIM. However, you will need a SIM with 4G data capability for the FMC920. A 2G-only SIM will not work in the FMC920. Contact us if you need SIM recommendations for UK fleet deployments.

Are the FMB920 and FMC920 compatible with the same fleet management platforms? Yes — both devices use standard Teltonika AVL protocols and are compatible with all major fleet management platforms including Wialon, Navixy, Traccar and many others.

Is the FMC920 more expensive than the FMB920?

The FMC920 is slightly higher in price than the FMB920 due to its 4G LTE connectivity. However, the difference is small relative to the long-term benefits of 4G. Contact Tracking Hardware UK for current pricing and volume discounts.

Do both devices support the Tracking Hardware UK BLE driver identification keypad? Yes — both the FMB920 and FMC920 feature Bluetooth 4.0 and are fully compatible with the Tracking Hardware UK BLE driver identification keypad range.

Published by Tracking Hardware UK — Official Teltonika Distributor Tags: Teltonika, FMB920, FMC920, GPS Tracker, Fleet Management, 4G Tracker, 2G Tracker, Driver Identification, BLE Keypad, UK Fleet Telematics