5G networks are vastly improving high-speed Internet connectivity around the globe and opening the door to a revolution in the Internet of Things (IoT). There are already billions of IoT devices, but the wider bandwidth and more efficient spectrum usage of 5G networks will allow far more devices to operate in close proximity without interfering with one another.
It will be years before 5G reaches its full potential, and 4G LTE networks will still be viable for a long time (on this check our article where we explain the difference between 4G and 5G). But for IoT manufacturers and consumers alike, it’s helpful to understand what makes this technology different and how we can expect it to shape the landscape of cellular connectivity moving forward.
How fast is 5G?
5G networks are designed to achieve a peak download speed of 20 Gbps and peak upload speed of 10 Gbps. The average rates are more like 100 Mbps for downloads and 50 Mbps for uploads. For comparison, the maximum theoretical data speeds for 4G LTE are 150 Mbps for downloads and 50 Mbps for uploads, with an average download speed of 20 Mbps and an average upload speed of 10 Mbps. In other words, 5G’s average data speed is five times faster than 4G, and in theory, it could reach speeds more than 100 times faster. But 5G doesn’t just boast faster downlink and uplink speeds. It also has much lower latency as well. Latency is the time it takes to relay requests and responses from one device to another through a network. In a 5G network, the average latency is four milliseconds, and it can be as low as one millisecond for some applications. With a 4G connection, latency is closer to 50 milliseconds—making 5G’s latency more than 10 times lower than 4G.
Consumers can download full-length movies in high definition in seconds. And advanced IoT applications like self-driving cars, smart farming equipment, and remote healthcare will rely on 5Gs low latency and greater bandwidth.
In the past, faster speeds have come hand-in-hand with greater power consumption, but 5G builds on the power saving features of 4G to offer higher data throughput and lower power usage.
What’s the bandwidth of 5G?
Speed isn’t the only advantage of 5G networks. 5G technology offers significantly wider bandwidth and greater flexibility in regard to how bands get used. This means 5G networks can maintain stable connectivity for a far greater number of devices in a concentrated area. And it’s the primary way 5G is changing the Internet of Things.
Every network operates within specific frequency bands, and the devices on that network have to share that bandwidth. Over the years, advances in wireless technology and new approaches to connectivity have allowed providers to do more with the bandwidth they have. However, every network still faces the same limitation: too many devices using the same frequency bands within the same “cell” of a cellular network creates interference and disrupts connectivity.
5G networks can facilitate connectivity on low frequencies below 1 Gigahertz (GHz), mid frequencies from 1 GHz to 6 GHz, and high frequencies from 6 GHz to over 100 GHz. Additionally, a 5G network can connect devices over both licensed and unlicensed bands, giving providers greater flexibility with how they use the radio frequency spectrum.
For comparison, commercial 4G networks can only use bands between 600 MHz and 3 GHz.
While the substantially higher frequencies allow for greater data speeds, this also creates new challenges for engineers that want to take advantage of 5G.
What are the challenges of 5G?
4G has been available for more than a decade. In that time, MNOs have built up massive 4G infrastructures, and innovators have found solutions to solve 4Gs shortcomings. 5G introduced new possibilities, but some new challenges came with it as well.
Less coverage
Higher radio frequencies have shorter wavelengths. And that means they can’t travel as far. This means that the “cells” of a 5G cellular network have to be smaller if an MNO wants to provide access to those high-frequency bands. 5G networks require more infrastructure, and that infrastructure offers less coverage… Source:emnify.com
Tuesday, April 21, 2026
