Wi-Fi 6 vs 6E vs Wi-Fi 7: which do you actually need?

Wi-Fi 6. Wi-Fi 6E. Wi-Fi 7. 802.11ax, 802.11be, EHT, MLO, 320 MHz, 4K-QAM. If you run a cafe and just want your guests to load Instagram without swearing at the table, the naming alone is enough to make you close the tab. The good news: the decision is much simpler than the marketing makes it look, and most venues are about to overpay for capacity they will never touch. This guide makes it plain, gives you a table you can actually read, and tells you when upgrading is a waste of money.

A quick honesty note first. CaptiFi does not sell, ship or install access points. We make the branded guest WiFi sign-in screen (the captive portal) that sits on top of whatever kit you already own, captures guest emails and quietly drives Google reviews. So we have no horse in the hardware race. We just see a lot of venues, and a lot of over-spec'd networks. If you want help picking the actual box, our access point buying guide goes deeper.

Wi-Fi 6, 6E and 7 in plain English

Wi-Fi 6 is the marketing name for the IEEE 802.11ax standard, formally approved in February 2021. It runs on the two traditional bands, 2.4 GHz and 5 GHz, and its main party trick is handling crowds. Features like OFDMA and uplink MU-MIMO let one access point serve lots of devices at once without each phone having to queue politely for its turn. For a busy room full of guests, that matters more than raw speed.

Wi-Fi 6E is not a new radio. It is exactly the same 802.11ax technology with one addition: a third, clean band at 6 GHz. The "E" stands for Extended, as in extended spectrum. In the UK, Ofcom has opened the full 1,200 MHz of 6 GHz (5925 to 7125 MHz), which is a big, mostly empty motorway lane that no microwave, baby monitor or decade-old router is sitting in. Same engine, extra room to breathe.

Wi-Fi 7 is the genuinely new standard, IEEE 802.11be, which the Wi-Fi Alliance began certifying on 8 January 2024. It keeps all three bands and piles on the headline features: Multi-Link Operation (MLO, which lets one device talk on two bands at the same time for more speed and a fallback if one band gets noisy), 320 MHz channels (double Wi-Fi 6's maximum width, only on 6 GHz), and an optional encoding called 4096-QAM that squeezes about 20 percent more data into each transmission. It is fast. The question is whether your cafe needs any of it.

The comparison table

Here is the whole thing in one place. Treat the theoretical speeds as physics-lab numbers: real devices, especially phones, get a fraction of them. They are useful for comparing generations, not for predicting what a guest's iPhone will actually see.

The short version: Wi-Fi 6E is Wi-Fi 6 with the 6 GHz band bolted on. Wi-Fi 7 is Wi-Fi 6E plus MLO and 320 MHz channels. Each step adds capacity and resilience, not magic.

What the tech actually does (the technical bit)

This section is for the IT buyer or the owner who likes specs. Skip to the recommendations if numbers make your eyes glaze.

The often-quoted Wi-Fi 7 figure of up to 46 Gbps is real but heavily theoretical. It needs 16 spatial streams on a 320 MHz, 6 GHz channel with 4096-QAM, all at once. Worth knowing: the 16-stream design was actually dropped from the final 802.11be spec, which caps at 8 streams (around 23 Gbps single-band per Wikipedia's 2026 reading of the standard). Either way, no phone or laptop hits those numbers. Early lab tests on common mobile devices showed throughput on the order of 5 Gbps, and that is still wildly faster than any guest will ever notice on a website.

MLO is the feature that genuinely earns its keep. Aggregating two bands at once raises real throughput, but more usefully it cuts latency and adds resilience: if 5 GHz gets noisy, the device keeps going on 6 GHz. The Wi-Fi Alliance describes this as reduced, more deterministic latency. There is no honest single millisecond figure to quote, so we will not invent one. Channel puncturing helps too: if part of a wide channel is being clobbered by interference, Wi-Fi 7 blocks off just that slice and keeps using the rest.

Backward compatibility is total. A Wi-Fi 5 phone connects happily to a Wi-Fi 7 access point; it just runs at Wi-Fi 5 speeds on 2.4 or 5 GHz. Devices without a 6 GHz radio simply cannot use 6 GHz at all. And client support is still patchy. The full iPhone 16 lineup supports Wi-Fi 7 but tops out at 160 MHz on 6 GHz, not the full 320. The Galaxy S24 Ultra does full Wi-Fi 7; the standard S24 and S24+ on Exynos do not support Wi-Fi 7 at all. Per Intel, by the end of 2024 there were 1,200-plus Wi-Fi 7 devices and over 5,000 supporting 6 GHz, so the install base is growing fast but is nowhere near universal.

What to buy by venue type

This is where the alphabet soup turns into a shopping list. Prices are the Ubiquiti UniFi UK store figures from 2026 (VAT inclusive) because UniFi is the kit we see most often behind a CaptiFi portal. Other brands map to the same logic.

Small cafe or single room (under 40 covers, one floor)

One Wi-Fi 6 or entry Wi-Fi 7 access point. A single UniFi U7 Lite at £83 or U7 Pro at £148 covers a typical cafe with room to spare. The E7 is overkill for a 40-cover cafe; a U7 Pro is plenty. If you already run a working Wi-Fi 6 AP, do not replace it for guests. See our cafe guide for the marketing side.

Busy pub or restaurant (high device density, peak crowds)

Here the win is capacity, not speed. A U7 Pro (300-plus clients) or U7 Pro Max at £232 (500-plus clients, 160 m²) handles a packed Friday night. Two well-placed APs beat one expensive one every time. The MU-MIMO and OFDMA crowd-handling in Wi-Fi 6 and up is exactly the feature a busy pub or restaurant needs.

Multi-room or larger retail (multiple zones, walls, a stockroom)

Plan for two to four APs on a single controller for clean roaming. A mix of U7 Pro units usually does it. Walls and shelving eat signal, so coverage planning beats chasing the fastest single box. For the marketing layer across multiple zones, retail venues care most about clean foot-traffic data.

Hotel or large multi-floor site

This is the only tier where the enterprise Wi-Fi 7 hardware earns its price. The UniFi E7 at £418 handles 1,000-plus clients with an 11.5 Gbps 6 GHz radio, and the high-density E7 Audience at £1,683 (1,500-plus clients, dual 6 GHz) is built for ballrooms and conference floors. A typical hotel wants many APs and tight management, which is a job for a designer, not a blog. Our deep dive on the E7 family covers the specs.

When not to bother upgrading

An honest list, because half the venues we meet are about to spend money they do not need to.

• Your current WiFi works. If guests connect and nothing buffers, a newer radio standard will not improve their experience. Latency on a website is dominated by your broadband line, not the AP generation.
• Your broadband is the bottleneck. A Wi-Fi 7 AP behind a 35 Mbps line is a Ferrari in a car park. Fix the line first.
• You bought a Wi-Fi 6 AP in the last few years. The jump from Wi-Fi 6 to 7 is real but incremental for guest browsing. Spend the budget on a second AP for coverage instead.
• You think faster WiFi captures more emails. It does not. The sign-in screen does that, and it runs identically on any generation.

If the goal is more guest emails and reviews, the radio is the wrong lever. Venues using CaptiFi typically capture 40 to 60 percent of connecting guests as subscribers and 300 to 500-plus emails per location per month, regardless of whether the box is Wi-Fi 5 or Wi-Fi 7.

The captive-portal reality on 6 GHz

This is the part nobody explains, and it trips people up. Short answer: a guest captive portal works on all three generations, full stop. The redirect that shows your sign-in page happens at the IP layer, after the device has connected. It does not care which radio or encryption carried the connection. Wi-Fi 6, 6E, 7, open, WPA2, WPA3: the portal redirect is unaffected.

There is one genuine wrinkle, and it is about the 6 GHz band specifically. The Wi-Fi Alliance does not allow a plain old open (no encryption) SSID on 6 GHz, and it bans WPA2 there too. On 6 GHz you must use WPA3 or Enhanced Open. So the classic "type your email and you are on" open network cannot live on 6 GHz.

In practice there are two clean ways to handle it:

1. Run your open guest SSID on 2.4 and 5 GHz only. Simple, universal, every device joins. You lose the empty 6 GHz lane for guests, which honestly no cafe will miss.
2. Use Enhanced Open (OWE). OWE, sometimes called Opportunistic Wireless Encryption, gives the guest a passwordless experience (no passphrase prompt) while quietly encrypting the link. It is the standards-based fit for a guest SSID on 6 GHz, and the captive portal layers on top of it as the consent and identity step. One catch from the WPA3 spec: OWE transition mode is not allowed on 6 GHz or where Wi-Fi 7's MLO is on, so 6 GHz needs a pure OWE-only network.

Either way, the portal itself does not change. CaptiFi authorises each guest through your controller's API rather than RADIUS, and it works with UniFi, TP-Link Omada, Cisco Meraki, Aruba, MikroTik, Ruckus, Cambium and DrayTek, plus a free plug-and-play device if you would rather not touch the controller. The consent flow is GDPR and PECR compliant out of the box.

The bottom line

If you are buying new today, buy Wi-Fi 7: it is now the default, the prices are sensible (a U7 Pro is £148), and it is the most future-proof choice. If your Wi-Fi 6 or 6E kit is working, keep it and put any budget into a second access point for coverage or a better broadband line. Wi-Fi 6E sits in an awkward middle now that Wi-Fi 7 costs about the same, so most people will skip straight from 6 to 7.

And whatever radio is on the ceiling, the thing that turns guest WiFi into repeat visits, reviews and a mailing list is the screen they see when they log in. That part is identical across every generation. You can start a 30-day CaptiFi trial with no card, pricing from $69/mo, and bolt it onto the kit you already have. See supported hardware if you want to check yours first.

Sources: Wi-Fi Alliance (Jan 2024), IEEE 802.11ax-2021 and 802.11be, Cisco and TP-Link technical guides, Wikipedia "Wi-Fi 6" and "Wi-Fi 7" (2026), Ofcom (2025), IDC enterprise WLAN data (2026), and the Ubiquiti UniFi UK store. Specifications and prices were correct at the time of writing in June 2026 and may have changed since. CaptiFi outcome figures are typical results across our venue base, not guarantees.