LTE Cat-1

LTE Cat-1 and Cat-1 bis offer a practical balance of performance, mobility, power use, and broad 4G availability for many IoT applications.

Last updated: September 2026

A Reliable 4G Choice for IoT Connectivity

LTE Cat-1 is an established 4G technology for IoT devices that need mobility, moderate data rates, and broad network availability.

LTE Cat-1 bis offers the same peak data rates and works on the same standard LTE networks, but simplifies the device design by using one receive path instead of the two typically used by conventional Cat-1. This can reduce hardware complexity, size, and cost.

As 2G and 3G networks are phased out, Cat-1 and Cat-1 bis have become increasingly important options for applications such as asset tracking, vehicle telematics, connected equipment, and payment terminals. Their main advantage is practical: they combine mature 4G infrastructure and roaming with enough performance for a wide range of IoT applications.

What Is the Difference Between LTE Cat-1 and Cat-1 bis?

The main difference is in the device’s receive architecture.

Feature	LTE Cat-1	LTE Cat-1 bis
Receive paths	Two	One
Receive diversity	Yes	No second receive path
Device design	More radio-frequency (RF) and antenna complexity	Simpler RF and antenna design
Peak data rates	10 Mbps downlink / 5 Mbps uplink	10 Mbps downlink / 5 Mbps uplink
Network infrastructure	Standard LTE	Standard LTE
Main advantage	Receive diversity can improve radio performance in difficult conditions	Lower device complexity, size, and potentially cost

Conventional Cat-1 normally uses one transmit path and two receive paths. Cat-1 bis removes the second receive path, which can simplify the antenna and RF design and reduce the number of components required.

The trade-off is reduced receive diversity. This can affect radio performance in difficult signal conditions, so devices expected to operate regularly near the edge of coverage should be tested with the actual antenna and hardware design.

Cat-1 bis does not require a separate network. From the network perspective, Cat-1 and Cat-1 bis both operate on standard LTE infrastructure.

Cat-1 bis may reduce device-side power consumption by simplifying the RF architecture and removing the second receive chain. However, this does not automatically translate into longer battery life.

Overall energy consumption depends on factors such as traffic patterns, signal conditions, modem and firmware design, and how long the radio remains active. Features such as Power Saving Mode (PSM) and extended Discontinuous Reception (eDRX) can also influence power consumption where supported and configured.

For devices that need to operate for many years from a small battery while sending only small, infrequent payloads, LTE-M or NB-IoT may still be a better fit.

Why LTE Cat-1 and Cat-1 bis Matter for IoT Today

Cat-1 has been part of the LTE standard since 3GPP Release 8, giving it a long-established technology base. What has changed is the connectivity landscape around it.

Broad 4G Availability

LTE Cat-1 uses standard 4G infrastructure and is supported across a very broad international network footprint. That makes it particularly useful for mobile devices, global products, and fleets that need connectivity across multiple countries without depending on the rollout of a separate IoT-specific radio technology.

As of June 2026, LTE, including LTE Cat-1, is supported by more than 800 operators worldwide.

Cat-1 bis Has Changed the Device Economics

Historically, device cost and complexity were disadvantages of Cat-1 compared with lower-power alternatives. Cat-1 bis narrows that gap through a simpler single-receiver architecture and growing chipset and module volumes.

Counterpoint Research reported that one out of every two cellular IoT modules shipped in 2025 was based on Cat-1 bis.

A Practical Option as 2G and 3G Are Retired

For many products moving away from 2G or 3G, Cat-1 and Cat-1 bis provide a useful combination of mobility, moderate data rates, mature LTE roaming, and support for services such as SMS.

Current Telenor and industry outlooks expect 4G to remain an important part of cellular IoT well into the 2030s. Individual operators may still refarm spectrum or change network configurations earlier, so long-lived products should be designed with lifecycle flexibility in mind.

Is LTE Cat-1 or Cat-1 bis Right for Your IoT Deployment?

There is no single cellular technology that is best for every IoT application. The right starting point is not the technology name, but what the device actually needs to do and where it needs to work.

How Much Data Does the Device Need to Transfer?

Cat-1 and Cat-1 bis offer substantially higher data rates than LTE-M or NB-IoT. That can matter for devices sending frequent telemetry, transferring larger files, or receiving firmware and security updates during a long lifecycle.

Applications requiring sustained high data rates, such as high-definition video, may instead need LTE Cat-4, a higher LTE category, or 5G.

Will the Device Be Moving?

Cat-1 supports standard LTE mobility and handover between cells. That makes it a strong candidate for moving assets such as vehicles, trackers, logistics equipment, and other devices operating across wider geographic areas.

How Important Is Battery Life?

If a device needs to operate for many years from a small battery while sending small amounts of data, LTE-M or NB-IoT may be more suitable.

Cat-1 and Cat-1 bis become stronger candidates when mobility, higher data rates, larger software updates, or broad LTE availability are also important.

Where Will the Product Be Used?

Cat-1 benefits from the broad footprint of standard LTE, but the device must still support the LTE frequency bands required in its target markets and meet applicable network-access, certification, and regulatory requirements.

Does the Application Depend on SMS or Voice?

LTE Cat-1 and Cat-1 bis support standard LTE services such as SMS. Voice over LTE (VoLTE) can also be supported, but actual availability depends on the device, operator network, roaming setup, and applicable certification requirements.
If SMS or voice is essential to the application, verify support in the intended deployment markets.

How Does LTE Cat-1 Compare With Other IoT Technologies?

LTE Cat-1 bis vs LTE-M

LTE-M is designed for low-power IoT and includes coverage-enhancement and power-saving features. It can be the stronger choice when a small battery needs to support a device for many years, data requirements are modest, and LTE-M availability is confirmed in the required markets.

Cat-1 or Cat-1 bis can be the stronger choice when higher data rates, mobility, larger data transfers, or broad international LTE availability are priorities.

LTE-M availability has expanded considerably, but coverage, roaming, and feature implementation still vary between operators and markets. The GSMA Mobile IoT Deployment Map provides a current view of commercial LTE-M and NB-IoT deployments.

For more detail, see the dedicated LTE-M guide.

LTE Cat-1 vs LTE Cat-4 and Higher Categories

LTE Cat-4 and higher LTE categories provide substantially more bandwidth than Cat-1, but generally come with greater device complexity, cost, and power requirements.

Cat-1 is well suited to telemetry, tracking, remote control, and connected products where moderate data rates are sufficient.

Cat-4 or higher categories are better suited to data-intensive applications such as video, cellular routers, and frequent large data transfers.

LTE Cat-1 vs NB-IoT

NB-IoT is optimized for highly energy-efficient devices that send small, infrequent payloads, including stationary meters and sensors in challenging indoor locations.

Cat-1 provides considerably higher data rates, standard LTE mobility, and broad LTE roaming availability.

For stationary devices with very low data and power requirements, NB-IoT may be preferable. LTE-M may be a better alternative where both mobility and low power matter and coverage is available. Cat-1 or Cat-1 bis is better suited when higher data rates, mobility, or broad international LTE availability are priorities.

LTE Cat-1, RedCap, or eRedCap?

5G RedCap is designed for mid-range 5G applications and is closer to LTE Cat-4 in performance positioning, while Enhanced RedCap (eRedCap) is expected to address lower-performance use cases closer to the Cat-1 range.

Both depend on 5G Standalone infrastructure, and broad international availability and 5G SA roaming are still developing.

For deployments requiring broad network availability today, Cat-1 and Cat-1 bis remain practical options where their performance and power characteristics meet the application. For very long product lifecycles, hardware teams may also consider multimode or 5G-ready module strategies where the additional complexity and cost are justified.

For a broader view of LTE Cat-1, LTE-M, NB-IoT, Cat-4 and higher LTE categories, 5G RedCap, and other options, see the IoT Connectivity Comparison.

Typical LTE Cat-1 and Cat-1 bis Use Cases

Cat-1 and Cat-1 bis can be a good fit for applications such as:

Asset tracking and logistics: Mobile devices sending location, status, and sensor data across wider geographic areas.
Vehicle telematics: Vehicle diagnostics, positioning, geofencing, and moderate data transfers.
Connected equipment and products: Devices requiring remote monitoring, control, and software or firmware updates.
Payment terminals and kiosks: Applications requiring responsive and widely available mobile connectivity.
Remote monitoring: Equipment with higher data-rate requirements than typical low-power sensors, but no need for high-bandwidth LTE performance.

These are examples, not automatic recommendations. Power requirements, coverage conditions, data rates, mobility, target countries, and hardware design should all be considered before selecting a technology.

What to Check Before Deploying LTE Cat-1 Globally

Choosing the radio technology is only one part of building a reliable IoT product. Before scaling a Cat-1 or Cat-1 bis deployment, validate the complete device and connectivity setup.

Target Countries and Networks

Identify where devices will operate and which networks they may need to access. Country-level 4G availability alone does not confirm that a particular device and connectivity service will work as intended.

LTE Frequency Bands

Make sure the selected module supports the LTE bands required across the target markets. A global connectivity service still depends on the device supporting the LTE bands used where it will operate.

Device and Network Requirements

Check the relevant device certification, regulatory, and operator requirements for the markets where the product will be deployed.

Antenna and RF Performance

Validate antenna performance under realistic conditions. This is particularly important with Cat-1 bis if devices may regularly operate in weak-signal environments.

SMS, Voice, PSM, and eDRX

If the application depends on these capabilities, verify support and configuration on the actual module and networks involved. A feature being defined in the standard does not mean it is enabled in every network.

Connectivity Lifecycle

Consider how network and connectivity requirements could change during the life of the product.

For long-lived devices, this may include selecting hardware with appropriate multimode or future-network support where justified. eSIM and eUICC can provide another layer of flexibility by allowing connectivity profiles to be managed remotely as commercial, regulatory, or network conditions evolve.

Migrating From 2G or 3G to LTE Cat-1

Cat-1 and Cat-1 bis can provide a practical migration path for many products still using 2G or 3G, particularly where mobility, moderate data rates, or SMS are important.

Migration involves more than replacing the modem. Network availability, antenna design, frequency bands, software dependencies, and device reconnection or fallback behavior should all be validated before rollout.

Network shutdowns differ between operators and countries and are often phased rather than immediate. Firmware behavior during these transitions can therefore be as important as the selected radio technology.

For current shutdown guidance and a deeper migration strategy, see From Sunset to Strategy: Making the Right Connectivity Choices for the Next Decade.

Validate Before You Scale

Specifications can help narrow down the right technology. They cannot tell you exactly how a finished device will behave on the networks and in the environments where it will actually be used.

Test Connectivity With Your Own Device

Test IoT SIM cards support LTE Cat-1 and other cellular IoT technologies and can be used to validate real-world connectivity with your actual hardware across target markets before a larger rollout.

Test Device Behavior Under Controlled Network Conditions

For more demanding technical validation, the Telenor IoT Test Lab can reproduce network and radio scenarios that are difficult to test reliably in the field.

Examples include weak or fluctuating signal, handover, network attachment and reattachment, PSM and eDRX behavior, VoLTE, and network transitions.

Using both field testing and controlled laboratory testing can help identify connectivity issues before they become problems across a large deployed fleet.

Co-authored by Our Expert

Jonas Karlsson, Product Manager IoT, is a seasoned telecom professional with over 30 years of experience across technical and commercial roles. Having worked as a solution manager, technical product manager, and for the past nine years as a product manager, Jonas brings a unique 360° view of the telecom business. At Telenor IoT, he focuses on integrating new network technologies to meet customer needs and has been instrumental in developing Telenor IoT Test Lab in Karlskrona, Sweden — a facility enabling global IoT device testing and validation.

Webinar: Beyond the Sunset – Your 2026 IoT Roadmap

Join Telenor IoT experts for a deeper look at 2G/3G sunset planning, LTE Cat-1/Cat-1 bis, eSIM, 5G RedCap, NTN, and the connectivity choices shaping global IoT fleets in 2026.

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Frequently Asked Questions

Does Cat-1 bis use the same LTE networks as Cat-1?

Yes. Cat-1 bis operates on standard LTE infrastructure and does not require a separate Cat-1 bis network deployment. The device must still support the required LTE bands and meet the relevant network-access requirements.

Does the single-receiver design of Cat-1 bis affect coverage?

It can affect radio performance in difficult signal conditions. Cat-1 bis removes the second receive path used for receive diversity in conventional Cat-1, which can reduce link margin. The practical impact depends on the device design, antenna, network, and deployment environment.

Is LTE Cat-1 bis better than LTE-M?

Neither technology is universally better. LTE-M can be preferable for very low-power applications and provides coverage-enhancement features. Cat-1 bis offers higher data rates and benefits from broad standard LTE availability. The right choice depends on power, data-rate, mobility, coverage, and geographic requirements.

Is LTE Cat-1 a good replacement for 2G or 3G?

It can be for many applications, particularly where mobility, SMS, moderate data rates, and broad LTE availability matter. Migration decisions should also consider hardware design, target networks, power requirements, and firmware behavior.

How long will LTE Cat-1 remain available?

Current Telenor and industry outlooks indicate that 4G will remain an important part of cellular IoT well into the 2030s. Exact network lifetimes will vary by operator, market, and frequency band.

For products with very long lifecycles, hardware teams should therefore consider both expected 4G longevity and whether multimode or future-network-capable hardware is justified by the deployment requirements.

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