Honest Mobile SIM Only Deals

The Best Honest Mobile SIM Only Deals for Every Budget

Honest Mobile keeps its range deliberately simple: 4GB, 10GB, or unlimited data plans with unlimited calls and texts, plus a separate set of data-only plans, all on 1 month rolling or 12 month terms. Use the filters above to narrow by data allowance, contract length, and monthly cost. For a full comparison against Smarty, iD Mobile, and Giffgaff, read our Honest Mobile review.

Honest Mobile SIM Only

Honest Mobile's plans start from £13.50 per month for 4GB with unlimited calls and texts on a rolling basis, or £12.15 per month on a 12 month term. Unlimited data costs £25 per month, and data-only plans start from £8.40 per month for 2GB on rolling terms or £7.56 on a 12 month term.

What sets Honest Mobile apart is the loyalty discount. Your bill decreases every month you stay, at a rate of 5% per year, capped at a maximum of 30%, and choosing a 12 month plan adds a 10% boost, which is why the 12 month prices above are lower. On the unlimited plan, that takes £25 down towards £17.50 over time. There are no mid-contract price rises: your bill only moves in one direction, and that is down.

Honest Mobile is not the cheapest network on Three's infrastructure on day one. If the lowest possible monthly price matters more to you than falling bills, certified environmental credentials, or fast support, compare Smarty and iD Mobile on the same network. Our Honest Mobile review sets out those comparisons in full.

An Introduction To Honest Mobile

Honest Mobile launched in 2019 with a straightforward proposition: reward loyalty instead of punishing it. While most networks raise prices each April, Honest Mobile cuts your bill by 5% a year the longer you stay, up to a maximum of 30% off.

It is the UK's first B Corp certified mobile network and operates as a carbon negative business, offsetting more emissions than it produces. The company also offers a second product called Smart SIM, a backup eSIM that connects to all four UK networks and roams in over 180 countries, which we tested at home and abroad in our Honest Mobile Smart SIM review.

What Network Does Honest Mobile Run On?

Honest Mobile runs on Three's network, which covers approximately 99% of the UK population for 4G. Following the VodafoneThree merger, Honest Mobile customers are gaining access to Vodafone masts in areas where Three signal is weaker, with the rollout continuing on a rolling basis. This dual-network access is expanding coverage, particularly in some rural areas.

Can I Get Unlimited Data With an Honest Mobile SIM?

Honest Mobile offers unlimited data with unlimited calls and texts at £25 per month on a 1 month rolling contract. The loyalty discount applies from your first month, so the price falls the longer you stay, reaching £17.50 at the maximum 30% discount after several years. A fair usage policy applies, and speeds may be reduced to 3G during exceptionally heavy use of several hundred gigabytes in a single month, which everyday use will not come close to.

If you do not need unlimited data, the 4GB and 10GB plans include the same unlimited calls and texts, and you can switch between allowances as your needs change without losing your accumulated loyalty discount.

Can I Use My Honest Mobile SIM Abroad?

Honest Mobile handles EU roaming differently from most networks. Instead of a flat allowance or a daily charge from day one, you get five free roaming days on every trip, and the count resets each time you return to the UK. After your free days, roaming costs £2 per day. You can use up to 20GB of data while roaming, and a fair usage policy limits roaming to around 60 days per year.

For short and frequent trips, this often means you pay nothing at all. Our Honest Mobile roaming guide explains the free days model, the charges after them, and the Smart SIM option for travel beyond Europe.

Can I Get 5G With Honest Mobile?

Yes. 5G comes as standard on all Honest Mobile plans at no extra cost. You will need a 5G-enabled phone and to be in an area with Three's 5G coverage. Real-world speeds depend on your handset, your location, and how busy the local mast is. Three consistently ranks among the fastest UK networks for 5G in independent testing, and Honest Mobile customers access that network directly.

Can I Get an Honest Mobile SIM If I Have a Bad Credit Rating?

Honest Mobile does not run a credit check on any plan. There is no hard search on your credit file at sign-up, which makes it a practical option if you are building or rebuilding credit, are new to the UK, or simply prefer not to have a search recorded. Compare the wider market on our no credit check SIM only deals page.

Which Size SIM Cards Can I Get With Honest Mobile?

Honest Mobile supplies a multi-size SIM card covering standard, micro, and nano fittings, so it works with any phone. You pop out the size your handset needs. SIM cards are made from recycled plastic, in keeping with the network's environmental positioning. Alternatively, you can skip the physical card entirely with an eSIM.

Can I Switch To Honest Mobile and Keep My Number?

You can switch to Honest Mobile and keep your existing number by requesting a PAC code from your current provider. Text PAC to 65075, then enter the code in the Honest Mobile app during or after activation and choose your transfer date. Transfers happen on working days, and requests made before 5pm are usually completed the next working day. Your PAC code is valid for 30 days.

You can read more about switching in our dedicated Honest Mobile switching guide.

Does Honest Mobile Have Good Coverage?

Honest Mobile uses Three's network, which covers approximately 99% of the UK population for 4G, with 5G available in over 300 towns and cities. The VodafoneThree merger is adding Vodafone mast access for Honest Mobile customers in areas where Three signal is weaker. As with any network, rural signal can be variable, so check Honest Mobile's coverage checker at your postcode before switching.

For more information on coverage and coverage checkers, read our Your Ultimate Guide to Network Coverage.

Is The Honest Mobile Network Fast?

Honest Mobile customers access Three's full 4G and 5G network. Three consistently ranks among the fastest UK networks for 5G speeds in independent testing, and Honest Mobile inherits those speeds directly. For 4G, speeds in well-covered areas are sufficient for streaming, browsing, and video calls. Rural and indoor performance depends on signal strength at your location, and congestion during peak hours can reduce speeds in busy areas, as with any network.

How Reliable Is Honest Mobile?

Honest Mobile's reliability is tied to Three's network, which offers wide UK coverage and strong 5G performance in independent testing. The VodafoneThree merger has strengthened coverage in areas where Three historically had weaker signal. For anyone who needs signal resilience beyond a single network, Honest Mobile's optional Smart SIM connects to all four UK networks as a backup data line, which is a level of redundancy no other UK network offers.

Does Honest Mobile Have Good Customer Service?

Customer service is Honest Mobile's most consistently praised feature. On Trustpilot, it holds a score of 4.6 out of 5 from around 4,000 reviews as of July 2026, with reviewers regularly naming individual support agents. The company claims average response times measured in seconds, and support runs through the app, live chat, and email seven days a week.

There is no phone support line, which is worth knowing if you prefer to speak to someone directly. In practice, the speed of the chat-based support means most issues are resolved quickly.

Getting The Right Honest Mobile SIM Only Deal For You

The unlimited plan at £25 per month is the one most Honest Mobile customers choose, and it makes the most of the loyalty discount because the saving grows on a larger base price. If your usage is lighter, the 4GB plan at £13.50 per month covers messaging, maps, and everyday browsing, and you can move between plans as your needs change without resetting your discount.

If you are committed to staying for at least a year, the 12 month term is the better deal: it adds a 10% boost to your loyalty discount from day one, which is why the 12 month prices in the listings above are lower than the rolling equivalents.

Does Honest Mobile offer eSIMs?

Yes, Honest Mobile offers eSIMs on all plans. New customers can order a SIM and swap to eSIM, or set up an eSIM directly through the app. Existing customers can switch from a physical SIM to an eSIM at any time through the app or online chat. Use the filter above to show eSIM deals, or compare the wider market on our eSIM only deals page.

Can I get a SIM Only Deal with No Credit Check from Honest Mobile?

Yes. Every Honest Mobile plan is available without a credit check. Use the filters above to find your Honest Mobile SIM only deal, or compare against other no credit check networks on our no credit check SIM only deals page.

How we rank Honest Mobile SIM only deals

By default, deals are sorted by lowest monthly price. You can change the sort order at any time using the controls above the listings and filter by data allowance, contract length, and eSIM availability. All deals shown are updated automatically. SIM Only Finder is an Ofcom-accredited UK mobile comparison site and earns a commission on deals taken out via our links. This does not affect how deals are ranked.