The world is becoming undeniably interconnected. By the end of 2025, over 21 billion devices will be actively communicating and exchanging data – a 14% leap from the previous year. This isn’t a future prediction; it’s the current trajectory of the Internet of Things (IoT), a network rapidly reshaping how we live and work.
Looking ahead, the scale is even more astonishing. Projections indicate 39 billion connected devices by 2030, surging past 50 billion by 2035. This exponential growth isn’t simply about more gadgets; it represents a fundamental shift in data collection and analysis, fueled by the relentless advancement of artificial intelligence.
But what’s powering this massive expansion? Currently, three core wireless technologies dominate the IoT landscape, collectively accounting for nearly 80% of all connections. Wi-Fi leads the charge, representing 32% of all IoT connections, a position strengthened by innovations in low-power functionality and the rollout of next-generation networks like Wi-Fi 6E and 7.
Bluetooth isn’t far behind, securing 24% of the market. Its strength lies in battery-powered devices, with new chipsets offering increased compute power, enhanced security, and reduced energy consumption. We’re seeing Bluetooth increasingly integrated into industrial applications and even large-scale retail systems like electronic shelf labels.
Cellular IoT – encompassing 2G, 3G, 4G, 5G, and specialized technologies like LTE-M and NB-IoT – currently holds 22% of global connections. This sector is experiencing particularly robust growth, with a 16% year-over-year increase in 2024, driven by the expanding capabilities of 5G and the cost-effectiveness of LTE Cat-1.
The impact of these technologies is particularly visible within the mobile operator space. Five companies – China Mobile, China Telecom, China Unicom, Vodafone, and AT&T – collectively manage a staggering 83% of all global cellular IoT connections. These operators generated $18.4 billion in revenue from 4.1 billion connections in 2024 alone.
China Mobile stands out as a dominant force, contributing nearly half of all global cellular IoT connections and a significant portion of the revenue. Their success stems from a comprehensive, end-to-end solution encompassing chips, operating systems, modules, and platforms, supporting a wide range of applications from video surveillance to industrial asset tracking.
However, the cellular IoT landscape is evolving. While early projections of 50 billion devices by 2020 proved optimistic, the segment has consistently gained market share. A clear divergence is emerging: volume growth is driven by cost-effective LTE Cat-1 and Cat-1 bis technologies, while revenue growth is fueled by premium 5G applications.
A new technology, 5G Reduced Capability (RedCap), is poised to play a crucial role in this evolution. Positioned between Cat-1 bis and full 5G, RedCap promises similar throughput with reduced complexity and power consumption, making it ideal for applications like smart cameras and wearable devices.
Interestingly, the once-promising NB-IoT and LTE-M technologies are facing new competition. While widely deployed, they are increasingly challenged by the versatility of Cat-1 bis, particularly in metering and similar applications. Some carriers, like AT&T, have even begun phasing out NB-IoT data plans, signaling a shift in the market.
The future of IoT isn’t just about connecting more devices; it’s about optimizing those connections and extracting maximum value from the data they generate. The interplay between these evolving technologies, the strategic moves of major mobile operators, and the relentless pursuit of innovation will define the next decade of this transformative revolution.
