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: August 2026

A Reliable 4G Choice for IoT Connectivity

LTE Cat-1 is an established 4G technology used in IoT devices that need a combination of mobility, moderate data rates, and broad network availability. The “Cat” simply stands for “Category,” the label used for different levels of LTE capability.

A newer variant, LTE Cat-1 bis, keeps the core capabilities of Cat-1 while simplifying the device design. This has helped make the Cat-1 family increasingly attractive for applications such as asset tracking, vehicle telematics, connected equipment, and payment terminals.

The timing matters too. As 2G and 3G networks are phased out, companies need connectivity technologies that work across the markets they operate in today, while still supporting devices that may remain in the field for many years. For many mobile and international IoT deployments, Cat-1 and Cat-1 bis provide a proven 4G option worth considering.

LTE Cat-1 and Cat-1 bis at a Glance

Cat-1 and Cat-1 bis are similar in most of their core capabilities. The main difference is in the device hardware, which can have implications for cost, size, and radio performance.

Feature	LTE Cat-1	LTE Cat-1 bis
Receive architecture	Two receive paths	One receive paths
Receive diversity	Yes	No second receive path for receive diversity
Device design	More radio-frequency (RF) and antenna complexity	Simpler RF and antenna design
Main design advantage	Better receive diversity	Lower complexity, size, and potentially cost

Both support peak rates of up to 10 Mbps downlink and 5 Mbps uplink and operate on standard LTE infrastructure. Features such as SMS, voice, PSM, and eDRX depend on device and network implementation.

These are technology capabilities rather than guaranteed real-world performance. Actual throughput, power consumption, coverage, and feature availability depend on factors including the device, network, radio conditions, and operator configuration.

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

The most important difference is what happens inside the device.

Conventional Cat-1 typically uses one transmit path and two receive paths. The second receive path provides receive diversity, which can improve radio performance when signal conditions are difficult.

Cat-1 bis reduces this to one transmit and one receive path. Removing the second receive chain can simplify the antenna and RF design, reduce the number of components required, save space on the circuit board, and lower device costs.

Importantly, Cat-1 bis does not require operators to deploy a separate Cat-1 bis network. It operates on standard LTE infrastructure and retains Cat-1’s peak downlink and uplink rates.

There is a trade-off. Qualcomm estimates an additional 2.5–3 dB penalty for Cat-1 bis compared with conventional Cat-1 because it uses fewer receive antennas.

For many applications, the simpler, smaller, and potentially less expensive device design can make that trade-off worthwhile. But if devices are expected to operate regularly in weak-signal conditions, RF performance should be tested carefully.

Not necessarily. Battery life depends on much more than the number of antennas.

Traffic patterns, signal conditions, firmware behavior, modem design, and network features such as Power Saving Mode (PSM) and extended Discontinuous Reception (eDRX) can all affect energy consumption.

For some data transfers and software updates, higher throughput can shorten the time the radio needs to remain active. But that does not automatically mean lower overall power consumption. 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. That gives it access to a mature LTE ecosystem and broad international network availability without depending on operators deploying a separate IoT-specific radio technology.

For companies deploying mobile devices, selling the same connected product across several countries, or managing fleets that cross borders, that availability can be a significant advantage.

Cat-1 bis Has Changed the Device Economics

Cost and hardware complexity were historically disadvantages of Cat-1 compared with lower-power alternatives.

Cat-1 bis has narrowed that gap. Its simpler receive architecture, combined with increasing chipset and module volumes, has enabled smaller and more cost-effective device designs.

This is no longer a niche development. 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 applications migrating away from 2G or 3G, Cat-1 or Cat-1 bis provides a useful combination of mobility, moderate data rates, standard LTE roaming, and support for services such as SMS where available.

Based on current Telenor and industry outlooks, 4G is expected to remain an important part of cellular IoT well into the 2030s. That does not mean every operator will maintain every 4G band indefinitely. Spectrum can be refarmed and network configurations can change, so long-lived deployments still need an active lifecycle strategy.

IoT Connections using LTE Cat1 and LTE Cat4 through 2030 — As the graph shows, the number of IoT connections using LTE Cat-1 and LTE Cat-4/4+ technologies continues to grow through 2030, while 2G/3G declines steadily. NB-IoT and LTE-M capture a rising but still modest share, and 5G (including 5G NSA, SA and Redcap) only begins to appear in volume after 2025. This projection clearly indicates that, although LPWA technologies are gaining traction and 5G will contribute significantly to this trend by the end of the decade, 4G, including LTE Cat-1, will dominate IoT connections for the upcoming years.

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, infrequent payloads, LTE-M or NB-IoT may be more suitable.

Cat-1 and Cat-1 bis become more attractive when mobility, higher data rates, larger software updates, or broad LTE availability also matter.

Where Will the Product Be Used?

A technology that works well in one market may not offer the same deployment options everywhere.

Cat-1 benefits from the broad footprint of standard LTE, but the device still needs to support the relevant frequency bands and meet applicable network-access, certification, and regulatory requirements.

Compatibility with standard LTE does not automatically mean that every Cat-1 device will work on every 4G network.

Does the Application Depend on SMS or Voice?

Cat-1 and Cat-1 bis can support voice and SMS where these capabilities are enabled by both the device and the network.

If SMS is used for remote commands or wake-up functionality, or voice is important to the service, confirm actual support in the networks where the devices will operate.

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

LTE Cat-1 bis vs LTE-M

LTE-M, also known as LTE Cat-M1, is designed for low-power IoT applications and includes features such as coverage enhancement and efficient power-saving modes.

LTE-M can be the stronger choice when a small battery needs to support a device for many years, data-rate 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

LTE Cat-4 provides substantially higher data rates than Cat-1 and is designed for applications that need more bandwidth.

Consider Cat-1 for telemetry, tracking, remote control, and connected products where moderate data rates are sufficient.

Consider Cat-4 or higher for data-intensive applications such as high-quality video, routers, and frequent large data transfers.

LTE Cat-1 vs NB-IoT

NB-IoT is optimized for devices that send small, infrequent payloads and may need to operate for years from a battery, including meters and stationary sensors in difficult indoor locations.

Cat-1 provides considerably higher data rates and supports mobility and standard LTE roaming.

For stationary devices with very low data-rate and power requirements, NB-IoT may be preferable. For devices that move, require higher data rates or larger transfers, or operate across multiple markets, Cat-1 or Cat-1 bis may provide a better fit.

LTE Cat-1 or 5G RedCap?

5G RedCap is designed for mid-range IoT applications that do not need the full capabilities and complexity of conventional 5G devices.

However, RedCap depends on 5G Standalone infrastructure, and both global availability and international 5G SA roaming are still developing.

For deployments that need broad network availability today, Cat-1 and Cat-1 bis therefore remain practical options where their performance and power characteristics meet the use case. RedCap should be evaluated against actual availability in the markets where the product will operate.

For a broader view of LTE Cat-1, LTE-M, NB-IoT, Cat-4, 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.

Firmware and Network Selection Logic

Consider what the device does when a network rejects an attachment, signal conditions deteriorate, or another network or radio technology becomes available.

For devices expected to remain in the field for many years, robust reconnection and fallback behavior can be just as important as the modem specification itself.

Connectivity Lifecycle

Consider how connectivity requirements could change during the life of the product. eSIM and eUICC technologies can provide additional 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 capabilities are important.

But replacing the modem is only one part of a successful migration. Device behavior, fallback logic, network availability, antenna design, and software dependencies should also be tested before rollout.

Network sunsets happen at different times across operators and countries and are often phased rather than immediate.

For current shutdown guidance, firmware risks, 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 evaluate connectivity with your actual hardware before a larger rollout.

This can help validate real-world connectivity with your actual hardware across target markets before 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 vary by operator, country, and frequency band, so long-lived products should still be designed for connectivity changes over their lifecycle.

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