Get a clear view of IoT connectivity: what it is, the main technologies available, and how to compare them.
Last updated: June 2026
Choosing the right connectivity technology is essential for keeping IoT deployments running smoothly over the long term. Today, there are more IoT options than ever before, but with that variety comes added complexity.
As mobile networks, roaming models, and IoT technologies continue to evolve, enterprises need to make informed connectivity decisions that support both current requirements and long-term growth.
IoT connectivity technologies can be grouped by how they connect devices, the range they support, the amount of data they can handle, and the type of IoT use cases they are best suited for.
2G/3G – Legacy cellular technologies that are being retired in many regions.
4G LTE – Mature cellular connectivity used for a wide range of IoT applications.
LTE Cat-1 / LTE Cat-1 bis – 4G-based connectivity for IoT devices that need more bandwidth than NB-IoT or LTE-M, with broad availability across major markets.
LTE-M – Low-power wide-area cellular connectivity for IoT devices that need mobility, broader coverage, and moderate data rates.
NB-IoT – Low-power wide-area cellular connectivity for devices that send small amounts of data and need deep indoor or remote coverage.
5G NSA – 5G connectivity that combines 5G radio access with existing 4G core networks, supporting higher-throughput IoT use cases where available.
5G SA – Full 5G Standalone connectivity using a 5G core, enabling native 5G features as rollout and roaming maturity develop.
5G RedCap – A 5G technology for mid-range IoT use cases, dependent on 5G Standalone availability.
LoRaWAN – Long-range, low-power connectivity for IoT sensors and private or public IoT networks.
Sigfox – A low-power wide-area network technology that is still used in some markets, although availability and ecosystem support vary.
Wi-Fi – Local connectivity for IoT devices that need higher throughput and have access to local power and network infrastructure.
Bluetooth Low Energy (BLE) – Short-range, low-power connectivity for nearby devices, sensors, tags, and consumer or industrial applications.
Zigbee – Short-range mesh networking commonly used in smart buildings, smart homes, and industrial environments.
Satellite and NTN – Connectivity that extends IoT coverage beyond terrestrial networks, supporting use cases in remote, rural, maritime, aviation, and emergency environments.
Each connectivity technology involves trade-offs. Some are optimized for higher data throughput and mobility, others for low power consumption, deep coverage, or short-range local communication. For enterprise deployments, the best option is usually the technology that meets the application requirements with the least unnecessary complexity.
IoT connectivity technologies can be compared across coverage, throughput, latency, energy efficiency, and global availability. The table below gives a high-level view of how the main cellular IoT options differ.
| Technology | Coverage | Throughput | Latency | Energy efficiency | Global availability |
|---|---|---|---|---|---|
| NB-IoT | Very good (deep, indoor) | ~20 kbit/s | Poor | Very good | Available in many regions; strongest adoption in China |
| LTE-M | Very good | ~200 kbit/s+ | Good | Very good | Most EU & American markets; Australia |
| LTE Cat-1 / Cat-1 bis | Good | ~3 Mbit/s+ | Good | Good | Nearly universal |
| LTE Cat-4/4+ | Good | ~100 Mbit/s+ | Good | Poor | Nearly universal |
| 5G NSA | Good | ~300 Mbit/s+ | Very good | Poor | In most developed markets |
| 5G SA | Good | ~300 Mbit/s+ | Very good | Poor | Scaling in major APAC & US carriers |
| 5G RedCap | Good | ~10 Mbit/s+ | Very good | Very good | Early stages (US, China, Kuwait, Philippines) |
| Satellite (NTN) | Good in remote outdoor | ~10 kbit/s–1 Mbit/s+ | Poor | Solution dependent | Limited / trial markets |
For a deeper side-by-side view, see our guide to IoT connectivity comparisons. For recommendations by application type, see our overview of use cases for cellular IoT technologies. For a visual overview, view our IoT connectivity infographic.
Get a deeper view of key cellular IoT connectivity technologies, including 2G/3G network sunsets, the role of 4G, LTE Cat-1, LTE-M, NB-IoT, 5G RedCap, NTN, and how different technologies fit different IoT use cases.
Start with the deployment requirements: where the devices will operate, how much data they need to send, how quickly they need to respond, and how long they must remain in the field. Then assess which technologies are available and proven in the target markets.
A practical approach is to begin with networks that are already deployed and proven in your target markets. For many IoT deployments, 4G remains a practical foundation, especially where broad availability, mature roaming, and long device lifecycles matter. LTE Cat-1 and LTE Cat-1 bis can support many low- to mid-bandwidth IoT use cases, while LTE-M remains relevant for power-constrained and battery-operated devices where coverage and roaming conditions support it.
Newer options such as 5G RedCap and NTN may be important for specific use cases, but they should be matched to real-world availability, cost, and operational requirements rather than treated as default replacements for 4G.
All IoT applications need reliable coverage, but coverage requirements vary. Some devices only need to connect within a building or local site, while others operate across cities, countries, rural areas, or remote regions.
Wide-area technologies such as cellular IoT are typically better suited to mobile or geographically distributed deployments. LPWA technologies such as NB-IoT and LTE-M can support low-power devices with specific coverage requirements. Short-range technologies such as Wi-Fi, BLE, and Zigbee are better suited to local environments where devices connect over shorter distances.
IoT data requirements vary widely. Some devices only send small packets of sensor data, while others need to support diagnostics, video, firmware updates, or real-time monitoring.
For low-data applications, NB-IoT or LTE-M may be sufficient. For applications that need higher throughput, LTE Cat-1, LTE Cat-4/4+, 5G NSA, 5G SA, or eventually 5G RedCap may be more suitable. Latency should also be considered where devices need to respond quickly or support time-sensitive applications.
Energy efficiency has a major impact on device lifetime and maintenance. This is especially important for battery-powered devices or devices deployed in locations that are difficult or costly to access.
Low-power technologies such as NB-IoT and LTE-M are designed for devices that send smaller amounts of data and need longer battery life. Technologies with higher throughput, such as LTE Cat-4/4+ or 5G, can support more demanding applications but usually require more power.
Mobility matters when devices move between locations, networks, or countries. Asset tracking, fleet telematics, connected vehicles, and global product deployments require connectivity that can support handover, roaming, and consistent operation across markets.
For global IoT deployments, availability in each target market is not enough on its own. Enterprises should also consider roaming maturity, local access requirements, operator restrictions, and how connectivity will be managed across the full device lifecycle.
IoT devices often remain in the field for many years. Network shutdowns, changing operator strategies, new technologies, and regulatory requirements can all affect long-term connectivity.
Enterprises should audit existing device fleets for legacy network dependencies, confirm operator-specific shutdown schedules, and prepare migration plans with clear checkpoints. Where possible, solutions should be designed with flexibility in both hardware and SIM management, allowing for technology fallback or over-the-air profile updates as conditions change.
Before a wide-scale rollout, pilot the selected connectivity technology in the environments where the devices will actually operate. Testing helps validate coverage, power consumption, latency, roaming behavior, integration complexity, and operational readiness before deployment at scale.
Planning beyond 2G and 3G shutdowns? Watch the on-demand webinar on LTE Cat-1, Cat-1 bis, LPWA uncertainty, firmware fallback risks, RedCap timing, and the safest connectivity choices for long-life IoT deployments.
Technology selection is only one part of a successful IoT deployment. Enterprises also need to manage coverage, roaming, IoT SIMs and eSIMs, network access, security, support, billing, integrations, and lifecycle changes across markets.
This becomes more important as IoT deployments scale across countries, networks, and regulatory environments. A technology that works well in one market may not be available, supported, or commercially suitable in another. Devices may also need to stay connected for many years while networks, roaming agreements, and connectivity standards continue to evolve.
Managed IoT connectivity helps enterprises reduce this operational complexity. Instead of managing multiple operators, platforms, contracts, and support processes separately, organizations can use one connectivity setup to connect, manage, and scale IoT devices across markets.
Telenor IoT supports global IoT deployments with managed connectivity, network access, IoT platforms, and expert support for enterprises operating connected products across multiple countries and networks.
Your connectivity strategy needs to reflect your devices, markets, data requirements, lifecycle, and deployment model. Whether you are planning a new IoT rollout, migrating from legacy networks, or scaling an existing deployment, Telenor IoT can help you evaluate the right connectivity setup.
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