SMARTY is offering an unlimited data SIM card on a flexible one-month rolling plan with no credit check required.

In the UK, SMARTY is currently offering an unlimited data SIM card. For just £20/month, customers can get a plan with unlimited minutes, unlimited texts and unlimited data. There are no speed restrictions for using too much data and the plan is available on a one-month rolling basis with no credit check required.

Order SMARTY Unlimited Data SIM →

In this article, we’ll review SMARTY’s unlimited data SIM card. We’ll start by looking at their unlimited data plan including what you can do with it, both in the UK and when travelling abroad. We’ll also compare SMARTY’s unlimited data SIM card to alternatives from other mobile networks. Finally, we’ll look at the coverage available on SMARTY and how you can keep your existing phone number when joining the SMARTY mobile network.

Unlimited Data on SMARTY

No Download Limits & One-Month Rolling SIM

SMARTY is a low-cost mobile network in the UK, owned and operated by Three as their low-cost subsidiary. The SMARTY sub-brand specialises in one-month rolling plans, giving you a SIM card with no commitment and with no need for a credit check.

You’ll currently pay £20/month on SMARTY for a SIM card with unlimited minutes, unlimited texts and unlimited data:

NetworkMinutesTextsDataMonthly
Cost
SmartyUnlimitedUnlimitedUnlimited£20.00

SMARTY’s unlimited data plan works on a pre-paid basis so you’ll pay for each month’s usage in advance. The payment will be taken automatically from your registered credit card or debit card unless you disable the automatic renewal in your SMARTY account. For any out-of-bundle usage (e.g. for international or premium-rate phone calls), you can top-up a separate cash balance onto your SMARTY account.

4G Download Speeds

With SMARTY’s unlimited data plan, you’ll get access to full-speed 4G on the SMARTY mobile network.

On SMARTY, there are no speed restrictions for using too much data. This makes it a little bit different to giffgaff’s £25 goodybag with Always-On data which only provides 4G download speeds on the first 40GB per month. On giffgaff, download speeds are restricted to 384kbps (0.4Mbit/s) between 8am and midnight each day once you’ve used 40GB of data.

Whilst SMARTY doesn’t have any speed restrictions for using too much data, it’s worth knowing about their fair usage limit of 1,000GB per month. According to SMARTY, this is used to identify commercial usage of their services:

We have set a usage cap at 1,000GB. When tested, using a mobile for every minute of every day only used around 1,000GB in a month. Setting this cap helps us to identify any commercial use of our services, which is not permitted by our terms and conditions.

Travelling Abroad

If you’re travelling abroad to another European country, you’ll be able to use up to 19GB of data per month at no extra charge. This is possible when travelling to one of the following 34 countries:

Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, French Guiana, Germany, Gibraltar, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Reunion, Romania, Slovakia, Slovenia, Spain, Sweden and Switzerland.

If you’re travelling outside of Europe, it isn’t possible to use the allowances from your unlimited data plan. Instead, you should check the SMARTY website for information about roaming charges. You should also top-up your account with a cash balance before you depart.

If you’re regularly travelling abroad to non-European countries (e.g. the USA, Australia, New Zealand, etc), it might be worth having a look at Three’s Go Roam Around The World offer instead. This will allow you to use your data allowance at no extra charge in 71 destinations, including many destinations that are outside of Europe.

Tethering & Personal Hotspot

On SMARTY, it’s possible to share your unlimited data allowance with other devices through the tethering or personal hotspot functionality on your smartphone. According to the SMARTY website:

You can tether and hot-spot all of your data with no speed restrictions.

It’s also possible to use a SMARTY SIM card in other devices like your tablet, mobile wi-fi router (MiFi) or 4G home broadband router. In fact, you could even combine SMARTY’s unlimited data SIM card with something like a Huawei B525 router to replace your home broadband connection. With an upfront cost of about £120 for the router and then a monthly fee of £25/month, this is competitive in both price and speed against traditional fixed-line fibre broadband services.

Comparison to Alternatives

In the UK, there are numerous other mobile networks also offering an unlimited data plan including EE, giffgaff, O2, Three, Vodafone and VOXI.

In general, it tends to be slightly cheaper when you take an unlimited data SIM card from Three. You’ll also get some extra features like Go Roam Around The World (inclusive roaming in 71 destinations) which isn’t available to customers on SMARTY. On the contrary, SMARTY’s unlimited data plan is a one-month rolling deal, giving you more flexibility compared to other networks.

NetworkMinutesTextsDataMonthly
Cost
ThreeUnlimitedUnlimitedUnlimited£18.00
12 months
SmartyUnlimitedUnlimitedUnlimited£20.00
1 month
iD MobileUnlimitedUnlimitedUnlimited£21.00
1 month
ThreeUnlimitedUnlimitedUnlimited£22.00
24 months
VodafoneUnlimitedUnlimitedUnlimited
2Mbps max
£22.00
24 months
ThreeUnlimitedUnlimitedUnlimited£24.00
1 month
ThreeUnlimitedUnlimitedUnlimited£24.00
12 months
VodafoneUnlimitedUnlimitedUnlimited
2Mbps max
£24.00
12 months
giffgaffUnlimitedUnlimitedAlways-On£25.00
1 month
ThreeUnlimitedUnlimitedUnlimited£26.00
1 month
VodafoneUnlimitedUnlimitedUnlimited
10Mbps max
£26.00
24 months
VodafoneUnlimitedUnlimitedUnlimited
10Mbps max
£28.00
12 months
VodafoneUnlimitedUnlimitedUnlimited
2Mbps max
£28.00
1 month
VodafoneUnlimitedUnlimitedUnlimited£30.00
24 months
Virgin MobileUnlimitedUnlimitedUnlimited£32.00
12 months
VodafoneUnlimitedUnlimitedUnlimited
10Mbps max
£32.00
1 month
O2UnlimitedUnlimitedUnlimited£33.00
18 months
VodafoneUnlimitedUnlimitedUnlimited£33.00
12 months
EEUnlimitedUnlimitedUnlimited£34.00
12 months
O2UnlimitedUnlimitedUnlimited£35.00
12 months
VOXIUnlimitedUnlimitedUnlimited£35.00
1 month
VodafoneUnlimitedUnlimitedUnlimited£37.00
1 month
EEUnlimitedUnlimitedUnlimited£39.00
12 months
EEUnlimitedUnlimitedUnlimited£39.00
12 months
To show you the most relevant plans, 15 similar but more expensive plans have been hidden. .

Vodafone offers a range of different download speeds across their unlimited data plans. You’ll get speeds of up to 2Mbit/s on Unlimited Lite, speeds of up to 10Mbit/s on Unlimited and uncapped speeds on Unlimited Max.

giffgaff offers Always-On data on their £25 goodybag, giving you unlimited downloads using coverage from O2. However, 4G speeds are only available on the first 40GB per month, with maximum speeds then reducing to 384kbps between 8am and midnight each day.

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

Network & Coverage

3G & 4G Coverage from Three

On SMARTY’s unlimited data plan, you’ll get coverage from the Three mobile network. At the time of writing, this equates to 99.8% population coverage on 3G and 98.3% population coverage on 4G.

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

Check SMARTY Coverage Map (smarty.co.uk) →

SMARTY doesn’t provide any 2G coverage so your smartphone will need to support at least 3G coverage at a minimum. You may have limited functionality when using a SMARTY SIM card in some dual-SIM smartphones.

5G Coverage Launch

Three plans to launch 5G in 25 towns and cities in 2019.

At present, 5G coverage isn’t available to customers on SMARTY.

Three, SMARTY’s parent mobile network, has announced the launch of 5G coverage for August 2019. This will initially roll out in London, followed by another 24 towns and cities before the end of the year:

Birmingham, Bolton, Bradford, Brighton, Bristol, Cardiff, Coventry, Derby, Edinburgh, Glasgow, Hull, Leeds, Leicester, Liverpool, London, Manchester, Middlesbrough, Milton Keynes, Nottingham, Reading, Rotherham, Sheffield, Slough, Sunderland and Wolverhampton.

It is yet to be confirmed whether customers on SMARTY will receive 5G coverage at the same time as customers on Three.

Keeping Your Phone Number

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

To do so, start off by ordering your unlimited data SIM card from SMARTY. It will initially come with a temporary phone number assigned to it, allowing you to test out the service before moving your phone number over.

Once you’ve done this, request a PAC Code from your old mobile network. This should be provided to you free of charge within 2 hours of your request.

Once your SMARTY SIM card arrives in the post, and once you’ve had the chance to make sure everything’s working correctly, provide your PAC Code to SMARTY by submitting it through your online dashboard. SMARTY will then schedule the transfer of your phone number, normally within 2 working days.

For step-by-step instructions on how to move your phone number to SMARTY, please select your current mobile 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 in-depth guide to using a PAC Code.

More Information

For more information on SMARTY’s unlimited data plan, please see their official website.

Your Comments 33 so far

We'd love to hear your thoughts and any questions you may have. So far, we've received 33 comments from readers. You can add your own comment here.

  • Hi there. I have just bought a Smarty unlimited data sim. Can I use this sim in any wifi router? I have a spare EE 4G router, will it work in this router? Can anyone recommend a router that I can use to benefit from the Smarty data sim? Thank you

    • Hi Kev,
      Thanks for your comment. Yes, you can use Smarty’s unlimited data SIM card in a router. EE’s 4G router should be compatible with the SIM, though you’ll possibly need to get it unlocked first. Alternatively, there are unlocked 4G routers you can buy e.g. from Huawei like the Huawei B525 which is always a very popular option.
      Hope this helps,
      Ken

  • hi Ken i use smarty unlimited data sim in my Zyxel lte4506 4g router and use it as my home broadband, i think its great value at £18.75 i get far better speed than on BT. and the bonus is i can take the router anywhere i go and run it off a power bank. I think smarty will go from strength to strength

    • @Sean. This is good to know. I plan using it as my home broadband if it’s any good. Currently with BT on an exchange only line so no hope of a fibre upgrade it seems in the near future tho BT aren’t shy in putting the bill up. Stuck on 16 down and 1 up with some snr tweaks through my billion router. The down speed is bearable but the up speed is a joke in this day and age. As a gamer 1Mbps upload speed barely passes the minimum requirement. Just ordered the Smarty unlimited so I’ll see how it goes in a couple of days. Fingers crossed it’s bye bye BT and your £68 a month bills.

  • Siobhan Henry said:

    Ken, I recently purchased an unlocked Huawei B535 router and a Smarty unlimited data sim. However I cannot get router to work. It works fine with a 3 sim but not Smarty. Do I need to do something special to get it to recognize the smarty sim?

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