Personal | Business
Sign in or Register
O2 Logo White
  • Shop

    Phones

    • Phones
    • Upgrades
    • Apple iPhone
    • iPhone 16
    • Android phones
    • Refurbished phones

    Tablets, laptops and dongles

    • Tablets
    • Apple iPad
    • Android tablets
    • Laptops
    • Dongles and mobile WiFi

    SIMs and Tariffs

    • Pay Monthly SIMs
    • Pay As You Go SIMs
    • Tariffs
    • International
    • Top-up
    • Essential Plan

    Accessories and more

    • Tech and accessories
    • Apple Watch
    • Smartwatches
    • AirPods
    • Coming soon
    • Great deals
  • Why O2

    Flexibility

    • O2 Switch up
    • O2 custom plans
    • Multisave
    • O2 Recycle
    • Click and collect

    Perks

    • O2 Extras
    • Volt
    • Priority tickets and offers
    • Perks at O2 venues
    • Pay As You Go Rewards

    Services

    • Manage your account
    • Keeping kids safe online
    • Ideas and Inspiration
    • Insurance

    Connected

    • Coverage checker
    • Network coverage
    • 5G coverage
    • O2 WiFi
    • Using your phone abroad
    • Live bigger with Volt

      Discover extra benefits
    • O2 bubbles

      See all the reasons to choose O2

      Why join O2?
  • Help

    Help and support

    • Account
    • Products and services
    • Device guides
    • Network and international
    • Safety and security

    Most popular

    • Activating your SIM
    • eSIM
    • How to track your order
    • Payment support
    • Understanding your bill

    Useful links

    • Store locator
    • Network status
    • Faulty device
    • Virgin Media O2
    • Fraud help

    Contact us

    • O2 Community
    • My O2 App
    • Contact us
  • My O2
  • Search
  • Basket

Bolt Ons

Help and support

If you are looking for Pay As You Go or Pay Monthly, you’ll find all the information you need below. Please choose which type of plan you have or are looking to purchase.

Pay MonthlyPay As You Go

Bolt Ons for Pay Monthly plans

Bolt Ons are products which can be added to your regular monthly plan, whenever you need them. For For example, if you’re running low on data, you can top up with a Data Bolt On. There’s also an International Bolt On for calling abroad, and a range of Travel Bolt Ons if you're going away yourself.

If you're already with O2, you can manage your Bolt Ons in My O2. Otherwise you can add them once you've joined us. If you have a Spend Cap, the price of these Bolt Ons will not be included within your Spend Cap.

If you’re on Pay As You Go, check out our Pay As You Go Bolt Ons.

Data Bolt OnsInternational Bolt OnTravel Bolt OnsData Roaming Bolt OnsMMS Bolt OnNext Generation Text Service

Data Bolt Ons

Data Bolt Ons let you stay online when you’ve run out of monthly data.

A one-off payment gets you a set amount of data to use within the UK and Europe Zone. If you add a Bolt On, it will start today and will remain valid for over 30 days. To choose a Data Bolt On, sign into My O2.

Want to learn more about data? Check out our help page Understanding data.

100MB £5.50
500MB £8.50
1GB £12.50
2GB £15.50
4GB £18.99
8GB £24.99
12GB £32.50

International Bolt On

Calling or texting any other country (even within our Europe Zone) from the UK is classed as an international call or text. Normally, these calls and texts are charged at standard international rates.

You can save money on international calling by adding our International Bolt On. For £3.00 a month, the International Bolt On gives you discounted rates on calls and texts to international mobile and landline numbers.

You can add the International Bolt On to your monthly plan in My O2, or by texting INTBOLTON to 23336.

Learn more about calling abroad from the UK.

Travel Bolt Ons

When you’re roaming in our Europe Zone, you’re free to use your phone just like you would in the UK, subject to a roaming limit.

Some plans include the O2 Travel Inclusive Zone Bolt On, or O2 Travel Inclusive Zone Ultimate Bolt On which cover roaming in certain other countries. Head to My O2 to check what’s included in your tariff.

While you’re travelling, we’ll send you a series of messages to make you aware of your roaming options. Or you can check the options for your destination.

Learn more about using your phone abroad.

O2 Travel Bolt On

Outside our Europe Zone, the O2 Travel Bolt On provides unlimited roaming in Zones 1 and 2 (75 destinations) for a £7 daily charge. You’ll only be charged on days you use the Bolt On. To opt into the O2 Travel Bolt On, just head to My O2 and browse Bolt Ons, or we’ll send you a link when you land.

Albania, Anguilla, Argentina, Aruba, Australia, Bahamas, Bangladesh, Barbados, Belarus, Bermuda, Botswana, Brazil, British Virgin Islands, Canada, Cape Verde, Cayman Islands, Chile, China, Colombia, Costa Rica, Dominica, Dominican Republic, Ecuador, Egypt, El Salvador, Ghana, Greenland, Grenada, Guatemala, Guinea, Guyana, Honduras, Hong Kong, India, Indonesia, Israel, Jamaica, Japan, Kenya, Madagascar, Malaysia, Mexico, Moldova, Montenegro, Montserrat, Myanmar, Netherlands Antilles, New Zealand, Nicaragua, Nigeria, Pakistan, Panama, Paraguay, Peru, Qatar, Rwanda, Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines, Saudi Arabia, Singapore, South Africa, Sri Lanka, Suriname, Thailand, Trinidad and Tobago, Turkey, Turks & Caicos, Ukraine, United Arab Emirates, Uruguay, USA, Venezuela, Yemen, Zambia

Data Roaming Bolt Ons

Outside our Europe Zone, if you’re not covered by your plan or don’t have an O2 Travel Bolt On, you’ll be charged our standard roaming rates for calls and texts. To use data, you’ll need to add a Data Roaming Bolt On.

A Data Roaming Bolt On gets you a fixed data allowance for a one-off payment, rather than being charged per day. Data Roaming Bolt Ons remain valid for at least 30 days from the date of purchase. A range of Data Roaming Bolt Ons are available for each travel zone, so check which Bolt Ons cover your destination.

To buy a Data Roaming Bolt On, just head to My O2 and browse Bolt Ons, or we’ll send you a link when you land.

Zone 100MB 500MB 1GB
Zone 1 £9 £18 £26
Zone 2 £18 £26 £45
Zone 3 £26 £45 £65

Austria, Azores, Belgium, Bulgaria, Canary Islands, Croatia, Cyprus*, Czech Republic, Denmark, Estonia, Finland, France, French Guiana, Germany, Gibraltar, Greece, Guadeloupe, Guernsey, Hungary, Iceland, Ireland, Isle of Man, Italy, Jersey, Latvia, Liechtenstein, Lithuania, Luxembourg, Madeira, Malta, Martinique, Mayotte, Monaco, Netherlands, Norway, Poland, Portugal, Reunion, Romania, Saint Barthelemy, Saint Martin, San Marino, Slovakia, Slovenia, Spain, Sweden, Switzerland, United Kingdom, Vatican City.


* Not including Northern Cyprus

Argentina, Australia, Botswana, Canada, Chile, Colombia, Costa Rica, Ecuador, El Salvador, Greenland, Guatemala, Guinea, Guyana, Honduras, Madagascar, Mexico, Myanmar, New Zealand, Nicaragua, Panama, Paraguay, Peru, Rwanda, United States of America, Uruguay, Venezuela, Yemen.

Albania, Anguilla, Aruba, Bahamas, Bangladesh, Barbados, Belarus, Bermuda, Brazil, British Virgin Islands, Cape Verde, Cayman Islands, China,  Dominica, Dominican Republic, Egypt, Ghana, Grenada, Hong Kong, India, Indonesia, Israel, Jamaica, Japan, Kenya, Malaysia, Moldova, Montenegro, Montserrat, Netherlands Antilles, Nigeria, Pakistan, Qatar, Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines, Saudi Arabia, Singapore, South Africa, Sri Lanka, Suriname, Thailand, Trinidad and Tobago, Turkey, Turks & Caicos, Ukraine, United Arab Emirates, Zambia.

Abkhazia, Afghanistan, Algeria, American Samoa, Andorra, Angola, Antigua and Barbuda, Armenia, Ascension Islands, Azerbaijan, Bahrain, Belize, Benin, Bhutan, Bolivia, Bosnia and Herzegovina, Brunei Darussalam, Burkina Faso, Burundi, Cambodia, Cameroon, Central African Republic, Chad, Comoros, Congo, Cook Islands, Cote d'Ivoire, Cuba, Democratic Republic of the Congo, Djibouti, Equatorial Guinea, Eritrea, Ethiopia, Falkland Islands, Faroe Islands, Fiji, French Polynesia, Gabon, Gambia, Georgia, Guam, Guinea-Bissau, Haiti, Inmarsat, Iran, Iraq, Jordan, Kazakhstan, Kiribati, Kosovo, Kuwait, Kyrgyz Republic, Laos, Lebanon, Lesotho, Liberia, Libya, Macau, Macedonia, Malawi, Maldives, Mali, Marshall Islands, Mauritania, Mauritius, Mayotte, Micronesia, Mongolia, Morocco, Mozambique, Namibia, Nauru, Nepal, New Caledonia, Niger, Niue, Norfolk Island, North Cyprus, North Korea, Northern Mariana Islands, Oman, Palau, Palestine, Papua New Guinea, Philippines, Puerto Rico, Russia, Saint Pierre and Miquelon, Saint Martin, Samoa, San Marino, Sao Tome and Principe, Senegal, Serbia, Seychelles, Sierra Leone, Sint Maarten, Solomon Islands, Somalia, South Korea, South Sudan, St Helena, Sudan, Swaziland, Syria, Taiwan, Tajikistan, Tanzania, Timor-Leste, Togo, Tonga, Tunisia, Turkmenistan, Tuvalu, Uganda, US Virgin islands, Uzbekistan, Vanuatu, Vietnam, Wallis & Futuna, Zimbabwe.

MMS Bolt On

Our MMS Bolt On can save you money when you’re sending images or videos by MMS. For £5.11 a month, you get 50 pictures or videos.

To add the MMS Bolt On, just head to My O2 and browse Bolt Ons.

Next Generation Text Service

If you're deaf, hard of hearing or speech impaired, you can use the Next Generation Text Service (NGTS) to make calls.

Get the Relay UK Bolt On for discounts on NGTS calls. Just head to My O2 and browse the Bolt Ons.

Learn more about Relay UK and our other accessibility services.

Last updated: 29/04/2025


Was this information helpful?


Can't find what you're looking for?

My O2

Track your usage, check your bills, upgrade and more

Go to My O2

Need help with your device?

Take a look at our useful self-help guide

Go to help

O2 Community

Head to our forum to ask questions and chat with other O2 customers

Join in
  • Find a store
  • Check our network
  • Sign in to My O2
  • Track my order
  • Search

Popular in shop

  • iPhone 16 Pro Max
  • iPhone 16 Pro
  • iPhone 16
  • Apple Watch Series 10
  • Apple iPad A16
  • Samsung Galaxy S25 Ultra
  • Samsung Galaxy S25
  • Samsung Galaxy Z Flip6
  • Google Pixel 9 Pro XL
  • Google Pixel 9 Pro
  • SIM Only Deals
  • Virgin Media broadband deals

Help and Support

  • Help home
  • Contact us
  • My O2
  • Collection and delivery

Shop

  • Phones
  • Tablets
  • Pay Monthly SIM
  • Collection and delivery
  • Virgin Media O2 Joint Venture
  • Facebook
  • Youtube
  • X
  • Instagram
  • About O2
  • Better Connections Plan
  • Careers
  • News & PR
  • Sponsorship
  • Virgin Media and O2
  • Accessibility
  • Terms & Conditions
  • Privacy policy
  • Cookie policy
  • Modern Slavery Statement

©2025 Telefonica UK Limited

In relation to consumer credit, Telefónica UK Limited is authorised and regulated by the Financial Conduct Authority (Reference Number 718822)

  • Home
  • Help
  • Products and Services
  • Offers and Extras
  • Bolt Ons