SMARTY Mobile offers low-cost SIM cards such as 5GB data for £5, 15GB data for £7, 60GB data for £10, and unlimited data for £16.

In the UK, SMARTY is a low-cost mobile network, offering SIM-only deals with 4G & 5G coverage from Three.

With its focus on simple one-month rolling Pay As You Go plans, SMARTY claims to give you “all the data you need for less”. At present, you can get a SMARTY SIM card with 5GB data for £5/month or 15GB data for £7/month. For heavy users, there’s 60GB data for £10/month and unlimited data for £16/month.

See all SMARTY Mobile Offers →

In this article, we’ll review the SMARTY mobile network, including their latest SIM-only plans and offers available on SMARTY. We’ll also compare SMARTY’s price plans to those available on other mobile networks like giffgaff. Finally, we’ll look at the coverage on SMARTY and how you can keep your current phone number when moving to the network.


In the UK, SMARTY Mobile currently offers SIM-only deals from £5 per month. Claiming to give you ‘all the data you need for less’, the plans range from 5GB data for £5/month up to fully unlimited data for £16/month.

The following table shows the plans currently available from SMARTY Mobile:

5GB Data: £5 per month
(normally £6 per month)
15GB Data: £7 per month
(normally 8GB per month)
16GB Data: £8 per month
60GB Data: £10 per month
(normally 40GB per month)
100GB Data: £12 per month
Unlimited Data: £16 per month
(normally £20 per month)
Calls & Texts: Unlimited minutes and texts on all plans
Contract Length: 1-month rolling plan (no credit check)
Network Coverage:

You can see all of the latest plans and offers on the SMARTY website.

5GB Plan

If you’re looking for SMARTY’s cheapest mobile plan, they’re currently offering 5GB data for £5 per month. This has been reduced from their normal selling price of £6 per month, as a special offer that’s running until the 30th April 2024.

You’ll also get unlimited UK minutes and unlimited UK texts included on this plan. It’s available on a one-month rolling basis, so you can change it or cancel it at any time.

NetworkMinutesTextsDataMonthly Cost

15GB Plan

For customers needing a little more data, SMARTY is currently offering 15GB data for £7 (increased from the normal amount of 8GB per month). You’ll also get unlimited UK minutes and unlimited UK texts included on your plan.

NetworkMinutesTextsDataMonthly Cost

The ’15GB for £8′ special offer ends on the 30th April 2024.

16GB Plan

SMARTY offers 16GB data for £8 per month. Normally, this is one of their most popular deals. However, the current promotion of 15GB data for £7 is likely to work out as better value for most users.

SMARTY’s 16GB plan is available on a one-month rolling basis, with no contract and no credit check required.

NetworkMinutesTextsDataMonthly Cost

60GB Plan

If you’re looking for a larger allowance of data, SMARTY is currently offering 60GB data for £10 per month (increased from the normal amount of 40GB per month).

On this 60GB plan, you’ll also get unlimited UK minutes and unlimited UK texts included. It’s available on a 1-month rolling basis with no credit check required, and with 4G & 5G speeds on the Three network.

NetworkMinutesTextsDataMonthly Cost

For comparison, giffgaff only offers 20GB data for the same price on their £10 golden goodybag.

100GB Plan

SMARTY is currently offering 100GB of data for £12 per month. You’ll also get unlimited UK minutes and unlimited UK texts included on this plan.

This plan is a good alternative to SMARTY’s unlimited data plan if you’re looking to get lots of data on your plan, but if you don’t need a fully unlimited data allowance.

NetworkMinutesTextsDataMonthly Cost

Unlimited Plan

As a special offer for April 2024, SMARTY is offering their unlimited data plan for just £16 per month (reduced from the normal price of £20 per month). This is only available when you sign up through this link.

SMARTY’s unlimited data plan gives you unlimited data with 5G speeds and no hidden fair usage limits. Because it’s one of the cheapest ways of getting unlimited data on a one-month rolling plan in the UK, this tends to be a popular choice for heavy smartphone users. You can also use it as an unlimited data SIM card in other devices like your tablet, mobile broadband dongle or 4G home broadband router.

NetworkMinutesTextsDataMonthly Cost

In the past, there was a fair usage limit of 1,000GB per month on SMARTY which was used to identify non-permitted commercial usage of the service. This fair usage limit is no longer in place. However, if you’re travelling abroad to one of 35 European destinations, you’ll only be able to use up to 12GB of data abroad at no extra cost each month.

Pay As You Go Rates

Except from on SMARTY’s Data Only plans, you’ll get unlimited UK minutes and unlimited UK texts included in your monthly payment. You’ll also get an inclusive allowance of mobile data.

For anything else that’s not included in your SMARTY plan allowance, you’ll need to top-up your SMARTY account with a cash add-on. The cash add-on can then be used to pay for your out-of-plan usage:

Calling Rates:
Calls to UK landline & mobile Included with base plan (Voice & Data Discount plans)
10p/minute (Data Only plans)
Calls to Voicemail Included with base plan (excluding Data Only)
Calls to International Numbers 19p/minute to £2/minute
Calls to Special Rate Numbers 3p/minute access charge
+ service charge from the company you’re calling
Messaging Rates:
Text Message (SMS) Included with base plan (Voice & Data Discount plans)
10p/text (Data Only plans)
Picture Message (MMS) Included with base plan (Voice & Data Discount plans)
40p/message (Data Only plans)
Data Rates:
Mobile Data £1/GB

It isn’t possible to use SMARTY on a pure Pay As You Go basis. This is because you’ll need to maintain an active plan at all times to maintain access to their network.

Data Only & Money Back Plans

Aside from SMARTY’s regular price plans (which are sometimes referred to as “Voice plans”), there are two other types of plan available on SMARTY:

  • Data Only plansSMARTY offers Data Only plans such as 2GB data for £5, 15GB data for £9, 40GB data for £13 and 100GB data for £17. You won’t get any inclusive minutes or texts on a Data Only plan. In most cases, we’d recommend choosing one of the regular plans instead as you’ll get a lot more data for your money that way. You’ll also get unlimited UK minutes and texts included on the regular plans.
  • Money Back plans: On SMARTY’s Money Back plans, you’ll get £1 back for each GB of unused data. Although this sounds like an good feature, it’s less useful in practice as you’ll pay more for your plan. For instance, you’ll pay £6 for the 1GB Money Back data plan. In contrast, you can get 5GB data for £6 when you sign up on a regular plan.

SMARTY also offers a 10% discount when you set up a Group with multiple SMARTY SIM cards.

Comparison to Alternatives

£5 per month plans

For £5 per month, SMARTY currently offers unlimited minutes, unlimited texts and 5GB data. This can be upgraded to 15GB data for £7 or 16GB data for £8.

Around the same price point, you’ll normally get a smaller allowance of data on other networks. However, it can be worth considering a Vodafone Basics plan if you want 4G coverage from a big-name network. Alternatively, Three also has some very good SIM-only deals.

The following table shows comparable SIM-only deals:

NetworkMinutesTextsDataMonthly Cost
(may rise during contract)
1 month
1 month
iD MobileUnlimitedUnlimited15GB£7.00
1 month
12 months
12 months
18 months

£10 per month plans

For £10 per month, you can get SMARTY’s 60GB SIM-only plan. Compared to other mobile networks like giffgaff, it’s a much larger allowance of data for the same price. You’ll also get it on a one-month rolling basis, giving you lots more flexibility compared to the plans on other networks.

The following table shows a list of comparable SIM cards at this price point:

NetworkMinutesTextsDataMonthly Cost
(may rise during contract)
1 month
12 months
iD MobileUnlimitedUnlimited60GB£10.00
24 months
12 months
18 months
1 month
1 month

£15 per month plans

SMARTY has a £16 unlimited data plan giving you unlimited minutes, unlimited texts and unlimited data with 5G speeds.

The following table compares SMARTY’s unlimited data plan to what is available on rival mobile networks:

NetworkMinutesTextsDataMonthly Cost
(may rise during contract)
1 month
24 months
Lebara MobileUnlimitedUnlimitedUnlimited£22.50
12 months
Tesco MobileUnlimitedUnlimitedUnlimited£25.00
24 months
18 months
24 months
10Mbps max
6 months half price
24 months
6 months half price
24 months
1 month

For more information, see our full guide to unlimited data plans in the UK.


As SMARTY is a SIM-only mobile network, you’ll need to provide your own unlocked phone to use with the service. You can use any compatible 4G or 5G phone, including your existing mobile phone or one that you’ve purchased SIM-free.

If you’re planning to use your existing smartphone, it might be necessary for you to first unlock it before you can use it on SMARTY. For more information, see our step-by-step guides to unlocking an iPhone and unlocking a Samsung Galaxy phone.

If you’re looking to buy a new unlocked smartphone, there are a number of online retailers where you can buy a SIM-free smartphone.

Network & Coverage

4G & 5G Coverage from Three

Smarty Coverage Map

SMARTY is the low-cost sub-brand of Three. As Three provides all of the underlying coverage for SMARTY, customers will receive the same coverage as customers on Three.

At the time of writing, SMARTY offers 99.8% population coverage on 4G. You’ll also get 5G coverage in more than 600 UK towns and cities if you’re using a compatible 5G device.

You can check the coverage in your area by entering your postcode on SMARTY’s online coverage map:

Check SMARTY Coverage Map ( →

For more information, see our guide to SMARTY’s mobile network coverage.

Wi-Fi Calling & 4G Calling

Both Wi-Fi Calling and 4G Calling are now available on SMARTY if you’re using a compatible mobile phone.

With Wi-Fi Calling, you’re able to make and receive phone calls on SMARTY using a Wi-Fi connection. This helps you to stay connected in places where a traditional mobile signal isn’t available (e.g. in buildings with thick walls and in rural locations with poor coverage).

With 4G Calling (also known as VoLTE), you can make and receive phone calls using a 4G connection. This allows you to benefit from HD-quality voice calls. You’ll also benefit from faster download speeds whilst you’re on a call.

Tethering & Personal Hotspot

Tethering or personal hotspot refers to the process of sharing your smartphone’s internet connection with another device (e.g. with your laptop or tablet). It’s useful for getting a mobile broadband connection on the go: for instance, sending e-mails on your laptop or watching YouTube videos on your tablet.

SMARTY allows the use of both tethering and portable hotspot. This is confirmed in the SMARTY help centre:

You’re entitled to use your data however you like, no matter which of the SMARTY plans you’re on, so you can tether and use your phone as a mobile hot spot with your full allowance if you want to.

You can also use your SMARTY SIM card inside a data-only device such as your tablet, mobile broadband dongle and 4G broadband router.

International Roaming

On SMARTY, it’s possible to use your mobile phone abroad through international roaming.

Within Europe, you can use your SMARTY plan allowances at no extra cost. However, on price plans with more than 12GB of data, European roaming is capped at a maximum of 12GB per month.

If you’re travelling outside Europe, you’ll be required to top-up your account with a cash add-on before you depart. You’ll then pay SMARTY’s international roaming rates.

Keeping Your Phone Number

If you’d like to keep your current phone number when moving to SMARTY, it’s a straightforward process to transfer it from your old mobile network.

To do so, start off by ordering a SIM card from SMARTY.

Once you’ve done that, ask your old network to provide you with a PAC Code. This can be obtained through your old mobile network’s website or app, or by texting PAC to 65075. You should normally receive your PAC Code within 60 seconds of your request.

When your new SIM card from SMARTY arrives in the post, pop it inside your mobile phone and activate the service. To start with, it will come with a temporary phone number assigned to it. This will allow you to test out SMARTY’s service before you move your phone number over.

Once you’re happy to continue, you can log in to your SMARTY account dashboard to submit your PAC Code and to have your phone number moved over.

For step-by-step instructions on how to move your phone number to SMARTY Mobile, please select your current network from the drop-down menu below:

PAC Code Finder: Transfer Your Phone Number to Smarty

Select your current mobile network:

  More Options

For more information about transferring your phone number between networks, see our guide to using a PAC Code.

Frequently Asked Questions

What SIM-only deals are currently available from SMARTY Mobile?
SMARTY currently offers a choice of the following SIM-only deals for your mobile phone:

All of these plans come with unlimited UK minutes and unlimited UK texts included.

Is it possible to get unlimited data on SMARTY?
Yes. SMARTY offers unlimited data for £16/month. It’s available on a one-month rolling basis with no credit check required. You’ll also get unlimited minutes and unlimited texts included in the price.
What are data discount plans on SMARTY?
Prior to March 2021, SMARTY offered a range of data discount plans on their mobile network (e.g. 1GB data for £6/month, 2GB data for £7/month and 3GB data for £8/month). You’d get a discount on the following month’s bill at the rate of £1 per GB for any data that you don’t use.

Nowadays, SMARTY’s newer price plans offer much better value. This is even without the data discount feature. For instance, you can get 5GB data for £6/month on the new plans.

How does SMARTY compare to giffgaff and VOXI?
On SMARTY, you’ll get a lot more data than you would on giffgaff or VOXI. For instance, you can get 40GB of data for £10/month on SMARTY. This compares to 20GB of data on giffgaff and 15GB of data on VOXI. SMARTY uses coverage from Three, whereas giffgaff uses coverage from O2 and VOXI uses coverage from Vodafone.
What coverage will I get on SMARTY?
On SMARTY, you’ll get 4G & 5G coverage from Three. This covers around 99.8% of the UK population, but it’s worth checking the coverage in your area on SMARTY’s website.
Does SMARTY offer 5G coverage?
Yes. SMARTY now offers 5G at no extra cost on all of their plans. You can check the availability of 5G in your area.
Can I keep my current phone number?
Yes. It’s a straightforward process to keep your current phone number. Ask your current mobile network to provide you with a PAC Code. You can get one free of charge through your mobile network’s app or website, or by texting PAC to 65075. This PAC Code should be given to SMARTY once you’ve activated your SIM card.

More Information

For more information, please see the official SMARTY Mobile website.

Your Comments 138 so far

We'd love to hear your thoughts and any questions you may have. So far, we've received 138 comments from readers. You can add your own comment here.

  • Hi Ken

    I’ve just signed up to SMARTY. The SIM was received the day after my order was processed, and my number was ported the following day (I requested this on the day the SIM arrived). So far, so good.

    Their welcome email, and website FAQs, state a one-time change needs to be made to the ‘3’ access point (under Mobile Networks in Settings) to enable roaming, but this AP didn’t show on my phone. Instead, an AP called ‘SMARTY Internet’ was present which had the correct settings, so I assume I’m good to go. I tried confirming this with SMARTY, but their Customer Service just replied with copies of the information on their website articles relating to a ‘3’ AP. So it looks like SIMs now come with a new AP, and the website information only applies to older SIMs or is no longer applicable.

  • I changed from GIffgaff to Smarty but unfortunatley most of the time my unlocked iphone only registers on the 3G network instead of 4G. The 4gb data allowance will be somewhat useless on the slow 3G network.

  • Bought a cheap Huawei mifi router which came with smarty SIM, this was for reliable internet at a static caravan up near Carlisle where the site provided internet is like 1990s dial up (unsuitable for streaming).
    After reading the smarty reviews I was dubious of the speeds, I can get a signal on three at the site (around 2/3 bars out of 5).
    I set the router & SIM up at home first, got unlimited £18 per month. Once at the caravan I switched the router on with smarty SIM card inserted, connected my phone and did a speed test which gave very a impressive 12mb down ,2 up.
    Over past few days the network has performed brilliantly, I’ve been doing regular speed tests and the speeds have been constant, this is a very rural area and I can only assume there’s a low amount of users, at home (Manchester) I noticed quite a dip in speeds in busy peek times.
    The router has been constant streaming whilst I’ve been up here and I’ve had no buffering whatsoever.
    This router and network have been the perfect solution, no contract, pay month by month, half the price of EE, the list goes on and on.
    I’m a very satisfied customer.

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