Thirdgreenovo Guidance Helpline: 020 3475 9516WhatsApp
Independent service Privately operated information service — not run by, endorsed by, or connected to any UK mobile network, Ofcom, or any government body.
Consumer guidance collection

UK mobile network guidance: understanding your options

Plain-English guidance documents covering the United Kingdom's main mobile networks — Three, O2, Sky Mobile and EE — plus the smaller virtual networks that run on them. Written for consumers who want independent, general information before contacting their network directly.

Published by Thirdgreenovo (independent)
Last reviewed July 2026
Applies to England, Scotland, Wales & Northern Ireland

Read before using this service

Thirdgreenovo is an independent third-party information and general guidance service. We are not affiliated with, authorised by, or acting on behalf of Three UK, O2 (Virgin Media O2), Sky Mobile, EE, Vodafone, or any other network operator or reseller. All trade marks belong to their respective owners and are referenced only to identify the subject of the guidance.

We do not sell contracts, process payments, or access customer accounts. For account-specific matters — billing, contract terms, cancellations, personal data — always contact your network's official customer service using the number on your bill or the network's official website. Calls to our helpline are charged at your provider's standard geographic (01/02) rate and provide general guidance only.

Network guidance documents

Guidance: Three UKBackground, the VodafoneThree merger, common questions, joining and leaving. Guidance: O2The network behind many virtual brands; satellite messaging trials. Guidance: Sky MobileHow a virtual network works and the data Roll piggybank. Guidance: EEThe UK's largest network; 5G standalone; BT bundles. Virtual (local) networksTesco Mobile, giffgaff, SMARTY, iD, VOXI, Lebara — who runs on what. Full index of documentsEvery guidance page on this site, in one list.

How-to guides

Switching: PAC & STACLeave any network with one free text — walkthrough and your rights. Checking coverage properlyThe five-step check that prevents most coverage regret. Wi-Fi CallingThe free fix for indoor dead spots on any network. eSIM guideDigital SIMs and the security habits that matter. Roaming abroadAvoiding bill shock under post-EU roaming rules. Complaints & your rightsThe 8-week rule and the free ombudsman.

Safety first

Never share theseOne-time passcodes, banking details, card PINs, or passwords. No legitimate network — and no guidance service, including this one — will ever ask for them. Full guidance: scams, OTPs and cold calls.

General question about any UK network?

Our independent guidance line can talk you through the processes on this site. We cannot access accounts, take payments, or act for any network — for those matters, contact your network's official customer service.

020 3475 9516 WhatsApp