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Mobile network reference

Numbers, codes and fast answers

Quick-reference information for UK mobile networks: short codes, customer-service numbers, plan limits and account features across the major operators (EE, O2, Three, Vodafone, Sky Mobile and more).

16 articles in this category

Editorial illustration of a stylised map of the United Kingdom with mobile signal coverage zones visualised as concentric circles, alongside a smartphone displaying a 5G signal indicator.

UK 5G Coverage in 2026: What Ofcom's Spring 2026 Report Shows About the UK's Major Mobile Networks

Ofcom's Spring 2026 report shows the share of UK premises with 5G from every mobile operator jumped from 47% to 64% in six months. What it means for EE, Vodafone, O2 and Three.

More in mobile network reference

A smiling man and woman sit outdoors with a laptop. The woman holds up a red SIM card.

Can I add another SIM to my mobile account?

You can add up to 10 plans to your Vodafone account in 2026, with potential discounts on each additional SIM or plan you add to your existing account.

2026-05-10

A surprised woman holds a SIM card and phone with no signal, next to a man with a laptop.

Can I use my UK mobile plan in the USA?

Vodafone USA roaming costs from USD 29 for 20GB in 2026. Check if your plan includes US roaming or add a Travel eSIM pass.

2026-05-10

A man and woman looking frustrated with their mobile devices and a router on a table outdoors.

Can't connect to your broadband router? UK troubleshooting steps

Try these 5 solutions if your Vodafone router won't connect, including power cycling for 30 seconds. Updated May 2026. Full troubleshooting walkthrough.

2026-05-10

A frustrated woman holding a phone and a red card, looking at a laptop with a login screen.

Can't Log Into Your Mobile Account? A Step-by-Step Fix

Fix Vodafone login issues in 2026 with our troubleshooting guide covering forgotten passwords, email problems and username errors.

2026-05-10

A man holds a red card while a woman shows him a smartphone, both sitting outdoors.

How Long Does a UK Mobile Number Stay Active?

Vodafone UK deactivates inactive numbers after 6 months, with a 180-day warning text. Reactivate within 90 days of blocking. Updated May 2026.

2026-05-10

A hand holds a black smartphone with a blank white screen, ready for content.

How to get a replacement or duplicate SIM card and keep your number (UK)

You can get a duplicate Vodafone SIM that keeps your number and plan by calling 191 free from your mobile, or in person at a Vodafone store.

2026-05-10

A hand holds a modern smartphone with a blank white screen, ready for content.

How to Check Your O2 Balance in the UK: 2026 Guide

O2 balance check dial *#10# free from your handset in May 2026, or call 4444 for automated customer service support. Detailed guide with sources.

2026-05-10

A person holds a smartphone displaying 'Turning off O2' and two green phone icons on the screen.

How to Turn O2 Voicemail On and Off: A Complete Guide

Turn off O2 voicemail by dialling ##002# or 1760 from your phone. Step-by-step guide for UK customers in May 2026. Detailed guide with sources.

2026-05-10

Interior of a Vodafone mobile phone retail store with display counters and signage

How to check your mobile balance: A step-by-step guide (UK)

Check your Vodafone balance by dialling *#1345# from your phone or calling 2345. Updated May 2026 with step-by-step instructions and alternative methods.

2026-05-10

A woman on the phone looking confused, holding a red SIM card. A man looks at a laptop.

What number do I dial for mobile customer service? (UK)

Call Vodafone on 191 from your mobile or 0333 304 0191 from a landline in the UK in 2026. Free support, plus international numbers and online chat options included.

2026-05-10

A confused man and woman look at a phone and a red card, with a laptop nearby on a street.

What number do I ring to top up my pay as you go phone (UK)?

Call 2345 free to top up your Vodafone Pay as you go phone in the UK. Minimum £5 required for new SIM activation in 2026.

2026-05-10

A customer inserts a card into a payment terminal held by a cashier at a grocery store.

Where Can You Buy Mobile Top-Up Vouchers in the UK?

Buy Vodafone top-up vouchers from PayPal, Argos, Tesco, Mobiletopup.co.uk and Recharge.com in May 2026. Denominations from £5 to £50 available online.

2026-05-10

A confused woman holds a SIM card and phone, while a male assistant with a laptop helps her.

How to Fix a SIM Card That Has Stopped Working (UK)

Your Vodafone SIM has stopped working? Try removing the SIM tray, powering off your phone, and restarting after five minutes. Full troubleshooting guide for May 2026.

2026-05-10

Three people looking confused and frustrated while using phones and a laptop outdoors, with shops in the background.

Why is my mobile top-up not working? Common reasons and fixes (UK)

Fix Vodafone top-up issues in 2026 by checking your balance on *#1345#, restarting your phone, or using a voucher code instead of the app.

2026-05-10

A man looking confused while holding a smartphone and a red SIM card in front of a shop.

New SIM Not Working? A UK Troubleshooting Guide

Fix your Vodafone SIM not working with these troubleshooting steps verified by Vodafone UK support in May 2026. Restart your device, clean the SIM contacts, or try another phone.

2026-05-10