---
title: "O2 slow internet in United Kingdom: tests, evidence and complaints · Kilobat Guides"
url: "https://kilobat.app/guides/o2-uk-slow-internet-complaint"
description: "O2 internet slow or dropping out in United Kingdom? Check equipment, compare tests, keep evidence and follow the complaint route."
---

# O2 slow internet in United Kingdom: tests, evidence and complaints

If your O2 connection is slow or unreliable, start with these equipment checks. Then document a repeatable result and ask for a specific investigation.

Applies to: The O2 WiFi Hub 1, from O2’s help for that hub (menus as of November 2026). This page is for O2 in the United Kingdom, not the German O2 HomeBox. · Checked: 5 November 2026

## When this helps

- You use O2 in United Kingdom.
- Your connection is slower than expected, drops out or performs badly at certain times.

## Check your O2 WiFi Hub

These checks apply to the O2 WiFi Hub 1. Check the model on the hub before you follow a light guide.

1. Read the hub light. O2 says a solid white info light means the hub is ready.
2. Check O2’s network status page for maintenance or a local fault.
3. O2’s slow-speed guide says to test again with an Ethernet cable.
4. Use the wired test when you can. A Wi-Fi-only result mixes the line with the room.

## Separate the service from your home Wi-Fi

This page is for O2 in the United Kingdom. For Germany, see [the O2 HomeBox complaint guide](https://kilobat.app/guides/o2-homebox-slow-internet-complaint).

Do not factory-reset the equipment as a first step. A reset can erase service settings and interrupt phone service.

1. Compare a wired connection to the router with Wi-Fi on the same device.
2. Repeat the same test server during the slowdown and at a quieter time.
3. Record download, upload, latency and whether another household device was using the connection.

## How to complain to O2

Use [O2’s official support](https://www.o2.co.uk/help/phones-sims-and-devices/o2/wifi-hub-1-windows-11/usage-and-settings/the-speed-of-the-internet-connection-is-lower-than-expected) to report the fault. Request a formal complaint reference if it remains unresolved.

Include the plan wording, dates, test conditions, previous references and the specific outcome you want. Ask for a written response.

For the local escalation route and conditions, follow [the United Kingdom complaint guide](https://kilobat.app/guides/uk-broadband-minimum-speed-complaint).

On Connectivity hell, O2 has 53 public Wi-Fi complaints in 30 days. See [O2 on Connectivity hell](https://kilobat.app/connectivity-hell/isp/o2).

## Collect the evidence with Kilobat

On a Mac, Kilobat can record connection checks and produce a support report. Review the report and add your test conditions before sharing.

The basic report export is free. [Kilobat Pro’s complaint wizard](https://kilobat.app/internet-complaint) helps assemble your evidence, impact and requested resolution into a draft you review and send.

Measurements cover this Mac while monitoring ran. They cannot prove whole-home uptime, establish provider fault or replace a required official measurement procedure.

## Sources

- [O2 Help: WiFi Hub 1 speed lower than expected](https://www.o2.co.uk/help/phones-sims-and-devices/o2/wifi-hub-1-windows-11/usage-and-settings/the-speed-of-the-internet-connection-is-lower-than-expected)
- [O2 Help: test WiFi Hub 1 coverage and speed](https://www.o2.co.uk/help/phones-sims-and-devices/o2/wifi-hub-1-windows-11/usage-and-settings/test-the-coverage-and-speed-of-your-wireless-internet-connection)
- [O2 Help: network status and coverage](https://www.o2.co.uk/help/international-and-network/network-and-coverage/network-support)

Checked on 5 November 2026.

## Related guides

- [UK broadband below minimum speed: complaints and leaving your contract](https://kilobat.app/guides/uk-broadband-minimum-speed-complaint): Your minimum guaranteed speed matters more than the headline average.
- [O2 (Telefónica Germany) slow internet in Germany: tests, evidence and complaints](https://kilobat.app/guides/o2-homebox-slow-internet-complaint): If your O2 (Telefónica Germany) connection is slow or unreliable, start with these equipment checks.
- [Internet slower than advertised? Test it before you complain](https://kilobat.app/guides/internet-slower-than-advertised): A low speed test is a starting point.
- [Slow internet complaint letter: a template with the evidence to attach](https://kilobat.app/guides/broadband-complaint-letter): A useful complaint says what happened, how you tested it and what you want the provider to do next.