Get Smart SIM

Better signal and
free global roaming

Connect to EE, O2 and Three in the UK

Free data roaming in 180+ countries

From £3.75/month

1 SIM
3 UK networks

Unlimited data for 100+ essential apps on EE, O2 and Three
Get Smart SIM

Roam free in 180+ countries

Free unlimited data roaming on 100+ essential apps

Easy as 1,2,3

1
Start by entering 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 150+ 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

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

Plans

Monthly
Cancel anytime
£5/month
Annual
Save 25%
Billed at £45/year
£3.75/month
Get Smart SIM now

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 100+ 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 or Three 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 100+ apps?
Does Smart SIM include web browsing, social media and streaming apps?
What about calls and texts?
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?

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
ABRP (A Better route planner)
Addison Lee
American Airlines
American Express
Apcoa Parking
Apple Maps
Apple Translate
Arriva - bus routes
Avanti West Coast
BP Pulse
Barclays
Bee Network
BlaBlaCar
Blackpool Transport
Bolt
May State it’s offline, but it’s online
Booking.com
Borders Buses
Brighton & Hove Buses
British Airways
C2C
Carousel Bus
Cathay Pacific
Chargeplace Scotland
Chase UK
Citymapper
Curve
D&G Bus
DB Navigator
DICE
Tickets only
Diamond Buses
Disneyland Paris
EE
ESTA (US Visa)
East Yorkshire Buses
Edinburgh/Lothian Bus & Tram
Eurostar
Eurowings
FREENOW
Falcon Bus
First Bus
First Direct
Flashscore
Flixbus
Flush
Fly Delta
Forest Bikes
GVB (Amsterdam transport authority)
Go North East
Go to Town Buses
GoCornwall Bus
Google Maps
Google Translate
Grab
Rides only
Grand Central Trains
Great Western Railway
Gridserve
H&C Bus
HSBC
Halifax
High Peak
Hilton Honours
Honest
Hull Trains
IHG: Hotels and Resorts
Icelandair
Instavolt
Ionity
Ipswich Buses
Jet Blue
Jet2
JustPark
KLM
Konect Bus
LNER
Life360
Lime
Livescore
Lloyds
Lopay
Lyft
MCard
MTA TrainTime
Marriott Bonvoys
McGills
Merseyrail
Met Office Weather Forecast
Metrobus
MiPermit
Midland Bluebird
Monzo
Morebus
My Disney Experience (Florida)
NCTX Buses
NHS
NS International
National Express
Nationwide
Natwest
Octopus Electroverse
Oxford Bus