Get Smart SIM

Better signal and
free global roaming

Connect to EE, O2, Three and Vodafone in the UK

Free data roaming in 180+ countries

From £3.75/month

See Smart SIM
in action

Get Smart SIM

1 SIM
3 UK networks

Unlimited data for 300+ essential apps on EE, O2, Three and Vodafone
Get Smart SIM

Roam free in 180+ countries

Free unlimited data roaming on 300+ essential apps

Easy as 1,2,3

1
Enter your email
Check your email for a Smart SIM with your name on it.
Great taste, by the way.
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By submitting the above, you agree to Honest marketing communications. No spam, promise.
2
Download the Honest app
3
Login and add Smart SIM

Includes 300+ apps

All with unlimited data.
More apps added every week.
Search apps
  • Messaging
    + more
  • Navigation
    + more
  • Finance
    + more
  • Travel
    + more
  • Search
    + more
Search apps

Join thousands already using Smart SIM

No more lost signal on your commute

Send WhatsApp messages, keep tabs on train times, and map to your next destination without disruption.

Say goodbye to expensive roaming

Automatically connect to the strongest available network from the moment you land. No more expensive roaming, wifi hopping or pesky data caps.

Unlimited data without the price tag

300+ essential apps at your fingertips, even when your main SIM runs out of data.
Get Smart SIM

Plans

Monthly
Cancel anytime
£10/month
Annual
Save 62.5%
Billed at £45/year
£3.75/month
Get Smart SIM

Plans

Annual
£3.75/month
save 25%. Billed annually.
Multiple UK networks
Free global roaming in 180+ countries
Download eSIM in minutes
Certified B Corp
Monthly
£5.00/month
Billed monthly. Cancel anytime.
Multiple UK networks
Free global roaming in 180+ countries
Download eSIM in minutes
Certified B Corp
Get early access
“Works incredibly well when my signal drops out. Revolutionary.”
Simon L  Honest customer

How is Smart SIM so affordable?
Unlike other multi-network SIMs, Smart SIM is for essential apps only. So you have peace of mind about staying connected, without the sky-high costs.

  • Use your main SIM for:
  • Social media
  • Open web browsing
  • Video calls
  • Email

Imagine if every time you lost signal you could just hop onto another mobile network

(We’re Andy and Josh by the way, Honest’s founders 👋)
We built Smart SIM to make that a reality
It works alongside your main SIM to provide unlimited data on 300+ apps across three major UK networks, plus free roaming in 180+ countries.

So when your signal drops or you go abroad, you automatically connect to another network. Keeping apps like WhatsApp, Google Maps, Uber and Monzo at your fingertips, with unlimited data to boot.

Fed up with bad signal, dodgy wifi and expensive roaming? It’s time to get a Smart SIM.
Get Smart SIM

Join thousands of happy customers making the switch

Got a question?
We’ve got the answer

What is Smart SIM?
Will Smart SIM automatically connect me to EE, O2, Three or Vodafone every time I lose signal?
Is roaming on Smart SIM completely free?
Why isn’t every network offering a SIM like this?
How much is Smart SIM?
Can I use Smart SIM as my main SIM?
Which apps can I use with Smart SIM?
Is data really unlimited for the 300+ apps?
Does Smart SIM include social media and streaming apps?
Can I call and text with my Smart SIM?
Can I get a physical Smart SIM?
How do I get a Smart SIM?
Is Smart SIM the same as Classic SIM?
Can I use a VPN with Smart SIM?
Can't I use social media or streaming apps?

Supported countries

Available apps

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🇦🇫
Afghanistan
🇦🇱
Albania
🇩🇿
Algeria
🇦🇩
Andorra
🇦🇴
Angola
🇦🇮
Anguilla
🇦🇬
Antigua and Barbuda
🇦🇷
Argentina
🇦🇲
Armenia
🇦🇼
Aruba
🇦🇺
Australia
🇦🇹
Austria
🇦🇿
Azerbaijan
🇧🇸
Bahamas
🇧🇭
Bahrain
🇧🇩
Bangladesh
🇧🇧
Barbados
🇧🇾
Belarus
🇧🇪
Belgium
🇧🇿
Belize
🇧🇯
Benin
🇧🇲
Bermuda
🇧🇹
Bhutan
🇧🇴
Bolivia
🇧🇦
Bosnia and Herzegovina
🇧🇼
Botswana
🇧🇷
Brazil
🇻🇬
British Virgin Islands
🇧🇳
Brunei
🇧🇬
Bulgaria
🇧🇫
Burkina Faso
🇧🇮
Burundi
🇨🇻
Cabo Verde
🇰🇭
Cambodia
🇨🇲
Cameroon
🇨🇦
Canada
🇰🇾
Cayman Islands
🇨🇫
Central African Republic
🇹🇩
Chad
🇨🇱
Chile
🇨🇳
China
🇨🇴
Colombia
🇨🇩
Congo (Democratic Republic of)
🇨🇬
Congo (Republic of)
🇨🇷
Costa Rica
🇭🇷
Croatia
🇨🇺
Cuba
🇨🇾
Cyprus
🇨🇿
Czech Republic
🇨🇮
Côte D'Ivoire
🇩🇰
Denmark
🇩🇯
Djibouti
🇩🇲
Dominica
🇩🇴
Dominican Republic
🇪🇨
Ecuador
🇪🇬
Egypt
🇸🇻
El Salvador
🇬🇶
Equatorial Guinea
🇪🇪
Estonia
🇸🇿
Eswatini
🇪🇹
Ethiopia
🇫🇴
Faroe Islands
🇫🇯
Fiji
🇫🇮
Finland
🇫🇷
France
🇬🇫
French Guiana
🇵🇫
French Polynesia
🇬🇦
Gabon
🇬🇲
Gambia
🇬🇪
Georgia
🇩🇪
Germany
🇬🇭
Ghana
🇬🇮
Gibraltar
🇬🇷
Greece
🇬🇱
Greenland
🇬🇩
Grenada
🇬🇵
Guadeloupe
🇬🇺
Guam
🇬🇹
Guatemala
🇬🇬
Guernsey
🇬🇳
Guinea
🇬🇼
Guinea-Bissau
🇬🇾
Guyana
🇭🇹
Haiti
🇭🇳
Honduras
🇭🇰
Hong Kong
🇭🇺
Hungary
🇮🇸
Iceland
🇮🇳
India
🇮🇩
Indonesia
🇮🇷
Iran
🇮🇶
Iraq
🇮🇪
Ireland
🇮🇲
Isle of Man
🇮🇱
Israel
🇮🇹
Italy
🇯🇲
Jamaica
🇯🇵
Japan
🇯🇪
Jersey
🇯🇴
Jordan
GoodSAM app
Google
Search functions
Google Find My Device
Google Maps
Google Translate
Google Wallet
Grab
Rides only
Grand Central Trains
Great Western Railway
Green Flag
Gridserve
Guardian
H&C Bus
HSBC
Halifax
Happy Cow
Hawaiian Airlines
Heathrow App
High Peak
Hilton Honours
Honest
Hostelworld
Hull Trains
IHG: Hotels and Resorts
Iberia
Icelandair
IndiGo
Instavolt
Ionity
Ipswich Buses
Irish Ferries
Japan Airlines
Jet Blue
Jet2
Jetstar
Just Eat
JustPark
KLM
Komoot
Konect Bus
Korean Air
LNER
Life360
Lime
Livescore
Lloyds
Lopay
Lufthansa
Lumo
Lyft
MCard
MTA TrainTime
Mapa AED
Marriott Bonvoys
McGills
Merseyrail
Met Office Weather Forecast
Metro
Metrobus
MiPermit
Microsoft Teams
Midland Bluebird
Mobile Passport Control
Monzo
Morebus
My Disney Experience (Florida)
My O2
NCTX Buses
NHS
NS International
NS Trains
NYT Games
Nando’s
National Express
National Rail
Nationwide
Natwest
NaviLens
Navionics Boating
NextBike
Norwegian Airlinesa
OS Maps
Octopus Electroverse
Octopus Energy
Outlook
Oxford Bus
Oxford Tube
Park4Night
Parkopedia
Passenger Assistance
PayByPhone
PayPal
PedidosYa
Plymouth Citybus
Pop
Priority Pass
Proton Mail
Pulhams Buses
PureGym
RAC