What do the different kinds of Wi-Fi mean?

Wi-Fi 1 802.11 launched in 1997, meaning that we have been seeing wireless technology get stronger and faster for nearly 30 years, gaining popularity, and seeing widespread adoption. 

What once helped a small number of devices connect without a cable (as long as you had the correct adapter card) now supports using cloud systems, VoIP phones, video calls, tablets, warehouse scanners, guest networks, security systems, mobile devices, connected machinery and much more. 

Wi-Fi is no longer just a “nice to have” convenience, it has become an essential part of the infrastructure that keeps people, systems and business operations connected. 

Whilst we now see names such as Wi-Fi 6 or Wi-Fi 7, understanding that bigger number equals newer… the naming has not always been that easy to understand, older Wi-Fi standards were known by technical names such as 802.11g, 802.11n or 802.11ac. To provide more transparency to consumers, the Wi-Fi Alliance introduced simpler generation names, including Wi-Fi 4 for 802.11n, Wi-Fi 5 for 802.11ac, Wi-Fi 6 (and Wi-Fi 6E) for 802.11ax and so on, to make it easier to understand what standard a device or network supports.  

 

Why do these Wi-Fi standards matter to businesses? 

The Wi-Fi standard your business uses can have a big impact on the speed, coverage, capacity, reliability and how well your network copes when lots of devices are connected at the same time to access a wide range of differing content types (see our article on how to prevent Wi-Fi Dead Zones). But why is it important that businesses ensure that they are keeping up with more modern standards? 

Ofcom reported, as of July 2025, that “full fibre” (also known as Fibre to the Premises or FTTP) was available to 78% of UK Small to Medium Businesses. Faster internet connectivity is valuable as businesses continue to adopt a “cloud first” approach to their services, with tools such as Microsoft 365 and SharePoint leading the way for productivity solutions in many businesses, but businesses still need the right internal networks to make the most out of their connectivity for the solutions they use.  

Think of it this way; 

It doesn’t matter if a business has a strong and fast internet connection coming into the building, if they are still experiencing slow or unreliable Wi-Fi in meeting rooms, production areas, warehouses, shared offices or loading zones due to older wireless connectivity solutions. 

But how have these standards evolved over time? 

 

A brief history of Wi-Fi 

Wi-Fi 1 

Wi-Fi 1 is commonly used to describe 802.11b, one of the earliest widely adopted Wi-Fi standards adopted in 1997. 

It helped introduce wireless networking, but it was built for a much simpler era of connectivity and websites that required far less data compared to the modern internet. By modern standards, it’s obsolete. 

Wi-Fi 2 

Wi-Fi 2 is commonly used to describe 802.11a adopted in 1999. (Yes, A is newer than B) 

802.11a was the first Wi-Fi standard to use the 5 GHz band and offered better and faster performance than earlier solutions. Whilst it gained early adoption, it was soon superseded by better and faster solutions. 

Wi-Fi 3 

Wi-Fi 3 is commonly used to describe 802.11g which was introduced in 2003. (G is newer than A, which was newer than B?) 

Wi-Fi G, as it becomes commonly referred to as, became popular because it improved speeds while keeping compatibility with many older devices and became a popular standard for both Home and Business Wi-Fi solutions in the early to mid 2000’s. However, as technology evolved and the era of the “smartphone” started in the late 2000’s it was replaced by newer solutions that focussed on an “always connected” approach to wireless infrastructure. 

Wi-Fi 4 

Wi-Fi 4, also known as 802.11n (2009), was a much more meaningful step forward. 

It supported both 2.4 GHz and 5 GHz (the first standard to support both) and helped Wi-Fi become more practical for wider business use which would begin the adoption of newer solutions that would lead to today’s cloud platforms, mobile devices or busy wireless environments. Whilst many Wi-Fi 4 networks are still deployed in both Home and Business environments, these are now struggling to meet the demands of modern offices, warehouses and constantly connected operational environments. 

Wi-Fi 5 

Wi-Fi 5, also known as 802.11ac (2013), focused on improving performance over the 5 GHz band and is still widely deployed today. 

For many businesses, Wi-Fi 5 may still feel usable. A smaller office with fewer devices and lighter usage may not notice issues with the day-to-day tools that they use. However, as more people rely on cloud systems, video calls, transferring large files, streaming video, more mobile devices and real-time applications, Wi-Fi 5 can begin to show its limits. 

This is especially noticeable in environments such as accounting firms, solicitors, schools, shared offices, manufacturers and logistics businesses, where reliable access to both cloud and on-premises systems, files, communication tools and mobile devices is essential. 

Wi-Fi 6 & Wi-Fi 6E 

Wi-Fi 6, also known as 802.11ax (2021), is one of the most important upgrades for modern business networks. 

Its biggest benefit is efficiency. Wi-Fi 6 is designed to perform better when many devices are connected at the same time, which makes it well suited to offices, warehouses, schools, healthcare settings, hospitality venues and production environments. 

Wi-Fi 6E extends Wi-Fi 6 into the newly available (2021) 6 GHz band. 

The extra spectrum gives compatible devices more room to operate, helping to reduce congestion on busy 2.4 GHz and 5 GHz networks (which can often overlap in busy business environments) and therefore reduces interference. 

For businesses using more laptops, tablets, phones, scanners and connected systems, Wi-Fi 6 (supported Wi-Fi 6E devices) can help improve performance, reduce congestion and create a more consistent user experience for high-bandwidth applications and mobile workflows. 

Wi-Fi 7 

Wi-Fi 7, also known as 802.11be (2024), is the newest major generation of Wi-Fi. 

Introduced in 2024, Wi-Fi 7 builds on the foundations of Wi-Fi 6 and Wi-Fi 6E, also using the 2.4GHz, 5GHz and 6GHz spectrums with a focus on faster speeds, lower latency, wider range, more capacity and stronger performance in demanding environments.  

On top of these developments, Wi-Fi 7 can support wider 320 MHz channels, Multi-Link Operation (sending and receiving data across different frequency bands and channels simultaneously) and 4096-QAM, all designed to improve overall performance and reliability for compatible devices.  

 

Do businesses need this latest and greatest in Wi-Fi performance? 

The answer, at least right now, is probably not. Or at least, not unless they need the benefits it offers, are already planning to upgrade ahead of a period of growth where they do not expect to upgrade their equipment again soon or are adopting new devices/technologies that support this latest standard. To gain the full benefit, the wider network also needs to be ready, including access points, switches, cabling, power, security configuration and compatible devices. 

For businesses, Wi-Fi 7 is most relevant where consistent high speed wireless performance is critical. This could include large offices, warehouses, showrooms, healthcare environments, education sites, creative studios and advanced manufacturing facilities. 

 

What does this mean for different business environments? 

It is important to remember that older Wi-Fi networks could create hidden limits.  

Quite literally, you can’t see them!  

Devices on your network may still connect, but users can experience slower performance, dropped calls, poor roaming between different areas of the office, and weak coverage or congestion in busy areas that can result in Wi-Fi Dead Zones. Upgrading and adopting newer Wi-Fi technologies (such as Wi-Fi 6, 6E or 7) ensures that your business network is capable of supporting how your business works today, while giving it the capacity and reliability needed to grow as your business requires it. 

In Manufacturing, newer Wi-Fi solutions can support larger production teams, engineering devices, quality control systems, tablets/mobile devices (such as smart scanners), connected machinery and more over a much more robust infrastructure which is less prone to interference. Newer wireless technologies support more stable and faster data speeds (with compatible devices), which can help businesses introduce enhanced digital workflows, automation and real-time reporting without being held back by poor connectivity. 

In Warehousing and Logistics, Wi-Fi networks need to be able to connect with a multitude of different devices across large and dense racking, stock areas, dispatch and loading zones and even external working spaces. Newer standards such as Wi-Fi 6, 6E and 7 can improve capacity, speed and device performance, but your network still needs to be mapped around your business layout, your users, roles, devices, obstacles and even how vehicles & stock move throughout your site. 

In professional services industries, such as Accounting, Legal and Consultancy firms, Wi-Fi performance can impact cloud access, reflect poorly in client meetings, introduce issues for secure document access and even cause issues for hybrid working employees who may use “hot desks” throughout your business. Newer and stronger wireless networks can reduce frustration during video calls, give users a more consistent experience across different office spaces, meeting rooms and more. 

In Hospitality, Education, Healthcare and Retail, the challenge is often device density. Not just density of space, but density of users, staff, visitors, customers, and their wide range of devices (many with 2 or more) and operational systems that all need reliable connectivity at the same time. Newer Wi-Fi technologies help support those environments more efficiently when paired with the right security, segmentation and access controls. 

Think of it this way, how many connected devices does the average person have? 

In the business environment this could be as simple as a Phone & Laptop. In a Hospitality environment this could be as high as a Phone, Laptop, Tablet, Smart Watch, Gaming Console and more. 

It is estimated that the average user/person has 3.6-4 connected devices (no that does not mean 0.6 of a device). However, there are cases where this could be far higher. 

How many connected devices do you carry around day-to-day? 

  

Technology Lifecycle Management 

It is important to remember that Wi-Fi should be considered as part of your wider business Technology Lifecycle Management strategy. 

As businesses replace older laptops, tablets, phones, scanners and operational devices, many of those newer devices are designed to support newer Wi-Fi standards. Meaning that they are likely capable of supporting better performance, lower latency, stronger reliability and improved efficiency. 

Sounds good, right? 

Well, it is… But only if the wireless network is ready to support them. 

Without that aligning all of your technology, even significant investments in modern hardware can still experience poor results. Without compatible wireless infrastructure, a new laptop may still suffer from slow cloud access, a newer tablet may still struggle in a dense warehouse aisle, a modern phone may still drop calls when moving between areas of the building. In many of these cases, the newer device is not the issue, it is the network it connects to that is not able to support newer standards. 

It is like asking an F1 driver to compete in a 1997 Nissan Micra. 

Okay, the analogy may be a bit over the top, but the message is still the same. 

This is why infrastructure (and your business Wi-Fi as a result) should not be treated as a one-off upgrade. It should form part of the wider lifecycle of your business technology. When your business is refreshing devices, adopting new cloud platforms, introducing more complex mobile workflows or planning for more automation, you should ensure that your network (wired or wireless) are reviewed at the same time. 

By aligning Wi-Fi with Technology Lifecycle Management, businesses can make better use of the hardware they are already investing in.  

 

How can TwentyFour IT Services help your business? 

At TwentyFour IT Services, we work with businesses to understand how they operate, what their operational needs are, how their wireless network is being used today and how they need it to operate in the future. 

That means looking beyond the Wi-Fi standard alone. We can help map where coverage is needed, identify if cabled infrastructure would be better suited for the identify weak spots, review device compatibility, assess access point placement, consider security requirements and design a wireless solution that fits how the business actually operates. 

In complex environments, such as manufacturing, warehousing and logistics, this could involve designing coverage across large scale production areas, racking aisles, offices, meeting spaces, dispatch zones and external working areas. 

The right network solution should enable your business to operate smoothly and efficiently, wherever that may be. TwentyFour can help ensure your people, devices and systems have reliable connectivity wherever they need it most. 

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