Hand holding SIM card

Honest Mobile SIM-only deals

Honest Mobile SIM only plans on Three's network, B Corp certified, carbon-negative, no mid-contract price rises, and a loyalty discount that grows every year. Plans from ~£10/month with EU roaming and eSIM support.

What Is Honest Mobile?

Honest Mobile is a UK mobile network that launched in 2019 with one goal in mind: to do things differently. It runs on Three's network, which means you get solid 5G and 4G coverage across the UK. But what makes Honest Mobile stand out is its values: no mid-contract price hikes, loyalty discounts, and a strong commitment to the environment.
Honest Mobile was the first UK mobile network to become a B Corp, a certification given to companies that meet high social and environmental standards. It is also carbon-negative, meaning it removes more carbon than it creates, and donates 1% of its revenue to climate causes. So if being green matters to you, this network is worth a look.

Why Choose Honest Mobile SIM-Only Deals?

There are a few things that make Honest Mobile SIM-only deals different from the rest:
1

No Mid-Contract Price Rises

Unlike the big networks that often raise prices each year, Honest Mobile promises your bill will not go up while you are with them.

2

Loyalty Discounts

Your bill actually gets cheaper the longer you stay. You get a 5% discount every year, up to a maximum of 30%.

3

Month-by-Month Plans

All plans are on a rolling monthly basis, so there is no long-term commitment. You can cancel or change at any time.

4

Free EU Roaming

Every plan includes 5 free days of EU roaming per trip, so you can stay connected when travelling in Europe.

5

No Credit Check

Honest Mobile does not run a credit check, making it accessible to more people.

6

eSIM Support

You can order a physical SIM and swap it to an eSIM, giving you a faster and more flexible setup.

Honest Mobile SIM-Only Plans at a Glance

Honest Mobile keeps it simple with a small range of plans. Here is what is currently available:

PlanDataMonthly Cost (approx)Contract Length
Classic SIM4GB~£10/month1 Month Rolling
Classic SIM10GB~£15/month1 Month Rolling
Classic SIMUnlimited~£25/month1 Month Rolling
Data Only SIM2GB~£7.56/month12 Month
Data Only SIM2GB~£8.40/month1 Month Rolling

← Swipe to see all columns →

All Classic plans include unlimited UK calls and texts. Prices shown are approximate starting prices; your bill gets cheaper over time thanks to loyalty discounts.

Network Coverage: Powered by Three

Honest Mobile uses Three's network infrastructure, which covers 99% of the UK population outdoors and offers some of the fastest average 5G speeds in the country. Whether you are in a busy city or a smaller town, you should get reliable data speeds and call quality.
If you already use Three or a Three-powered network like iD Mobile or SMARTY, switching to Honest Mobile will give you the same signal, but with better pricing benefits over time.

How Does Honest Mobile Compare to Other Networks?

Switch makes it easy to compare Honest Mobile SIM-only deals alongside other UK networks. Here is a quick look at how it stacks up:

FeatureHonest MobileSMARTYgiffgaff
Powered ByThreeThreeO2
No Price RisesYesYesNo
Loyalty DiscountsYes (5%/year)NoNo
EU Roaming5 free days/tripNoSelected plans
Credit CheckNoNoNo
eSIM SupportYesYesYes
Unlimited Data From~£25/mo~£15/mo~£20/mo

← Swipe to see all columns →

SMARTY offers cheaper unlimited data, but Honest Mobile wins on loyalty rewards and guaranteed price stability. For people who stay on the same plan for 2+ years, Honest Mobile often works out better value in the long run.

Who Are Honest Mobile SIM-Only Deals Good For?

Honest Mobile SIM-only deals work well for a range of people:
Light to moderate data users who need between 4GB and unlimited data per month
People who hate surprise price increases and want to know exactly what they pay each month
Long-term customers who want to be rewarded for staying loyal
Eco-conscious users who want their money to go to a carbon-negative company
Travellers who visit Europe regularly and want free roaming included
Anyone who does not want to pass a credit check to get a plan

Honest Mobile Smart SIM: What Is It?

In 2025, Honest Mobile launched a new product called the Smart SIM. This is an eSIM designed to work alongside your main SIM card. It connects to multiple UK networks, including EE, O2, and Three, and switches automatically to the best available signal.
The Smart SIM also includes unlimited data for over 200 essential apps and free global roaming in 180+ countries, making it useful for frequent travellers. Pricing starts at around £10 per month on a rolling contract or £45 for the full year.
This product is separate from the Classic SIM plans listed above and is aimed at people who want a backup connection or who travel internationally often.

How to Get an Honest Mobile SIM-Only Deal on Switch

1

Browse all current deals

Use the comparison tool on this page to browse all current Honest Mobile SIM-only deals.

2

Filter by data, price, or contract length

Find the right fit for your usage and budget.

3

Click through to Honest Mobile

Order your SIM or eSIM directly.

4

Keep your existing number

Request a PAC code from your current provider by texting PAC to 65075.

5

Activate your new SIM and start saving

Your number transfers usually within one working day.

Switching takes just a few minutes, and because Honest Mobile does not require a credit check, almost anyone can sign up.

Compare Honest Mobile SIM-Only Deals on Switch Today

Switch helps you find the best Honest Mobile SIM-only deals quickly and clearly. We update our comparison tool daily so you always see the latest prices and plans. Whether you want a low-cost 4GB plan or full unlimited data, compare your options above and make the switch today, no fuss, no hidden fees.

Compare Honest Mobile SIM-only DealsCompare All SIM-only Deals

FAQs

Is Honest Mobile good for coverage?

Yes. Honest Mobile runs on Three's network, which covers 99% of the UK outdoors and has some of the fastest 5G speeds available in the country.

Can I keep my existing number?
Does Honest Mobile raise prices mid-contract?
How does the loyalty discount work?
Is there a credit check?
Can I use Honest Mobile abroad?

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