Get a free SIM card for your mobile phone: Pay As You Go offerings compared from 20 UK networks.
Whether you’re a smartphone fanatic or someone who only uses their phone on an occasional basis, there are some great deals to be had when you order a free Pay As You Go SIM card in the UK.
The best Pay As You Go SIM cards offer super-low rates that can even rival Pay Monthly SIM cards in terms of value for money. To take advantage of the best offers currently available, simply order a free SIM card below and slot it inside your mobile phone. There are no credit checks required or upfront fees to pay. There’s also no need to set up a direct debit: simply top-up your SIM card when you need credit to pay for your airtime.
In the table below, we’ve reviewed free SIM card offers from 20 of the UK’s most popular Pay As You Go networks. We’ve included mainstream providers as well as low-cost alternatives and specialist Pay As You Go mobile networks for calling another country. We’ve also compared the cost of each network to help you get the best value for money.
- Changing mobile network? If you’re keeping the same phone but changing to another network, it might be necessary to first unlock your handset. See our guides to unlocking an iPhone and unlocking a Samsung Galaxy handset.
- Coverage is identical on many mobile networks. Many networks share the same coverage provider: you’ll get identical levels of coverage when using any of these networks. To give an example, ASDA Mobile uses coverage from EE and VOXI uses coverage from Vodafone.
- Keeping your mobile number. If you’re changing mobile networks, it’s super easy to keep your current phone number. Once you’ve ordered your new SIM card, contact your current network and ask them for a PAC Code. You can then pass this PAC Code on to your new mobile network and your phone number will be moved over on the next working day. For more information, see our guide to transferring your mobile phone number.
Best Pay As You Go SIM Card Offers
At present, ASDA Mobile is our top pick amongst the UK’s Pay As You Go offerings. They offer flexible 30-day bundles and 99% 4G coverage from the EE network.
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ASDA Mobile Most Popular: 52% of our readers choose to join ASDA Mobile*
For light users, ASDA Mobile charges 8p/minute and 4p/text. There are no regular monthly charges and your Pay As You Go credit won’t expire (you just need to use your phone at least once every 180 days to keep it active). The minimum top-up amount on ASDA Mobile is just £1 each time. For regular users, ASDA Mobile has a competitive range of 30-day bundles. For instance, you can get 600 minutes, unlimited texts and 3GB of data for £10/month. To take advantage of the offer, you should order a free SIM card from the ASDA Mobile website. |
ASDA Mobile offers a free Pay As You Go SIM card with Amongst readers of our website, VOXI and 1pMobile are also highly popular choices. They both offer low Pay As You Go rates (VOXI is for frequent mobile users and 1pMobile is for lighter users):
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VOXI 1% of our readers choose to join VOXI*
Customers buying a 30-day bundle from VOXI will also receive unlimited minutes, unlimited texts and “endless social data”. This allows you to access Snapchat, Instagram, WhatsApp, Facebook, Twitter, Pinterest, Viber and Facebook Messenger without using your normal data allowance. On VOXI, you’ll get the same coverage as customers on Vodafone. If you don’t convert your credit into a one-month bundle, it’ll cost you 30p/minute and 14p/text to use VOXI. Access to mobile data requires you to buy a bundle from £10/month, making VOXI a far better option for regular mobile users who will top-up every month. |
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1pMobile 6% of our readers choose to join 1pMobile*
A unique requirement of 1pMobile is you’ll need to top-up your phone with at least £10 of credit every 120 days. This is equivalent to £30 of credit per year. For convenience, 1pMobile offers automatic top-up functionality which you can use to make sure you meet the minimum top-up requirement. |
VOXI is Vodafone’s low-cost Pay As You Go sub-brand, offering deals such as 
If you’re a light mobile user wanting the lowest possible rates, Other major Pay As You Go providers include:
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EE 6% of our readers choose to join EE*
For light users not buying a pack, calls will cost 35p/minute and texts will cost 15p each. Access to mobile internet is only available when you buy a Pay As You Go pack. The cheapest available pack is the £5 Everything Pack which gives you 100 minutes, 250 texts and 150MB of internet. For more information, please read our full review of EE Pay As You Go. Order EE SIM card (Free with top-up) → Tip: For £10/month, ASDA Mobile gives you 600 minutes, unlimited texts and 3GB of data. Compared to EE’s £10 Everything Pack, this is more than double the number the minutes and three times as much data. The coverage on ASDA Mobile is provided by EE. Find out more about ASDA Mobile. |
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O2 7% of our readers choose to join O2*
For smartphone owners, the most popular option is O2’s Big Bundles tariff. For £10/month, you’ll get 500 minutes, 5000 text messages and 2GB of internet. Unused data will rollover at the end of the month, but only if you renew your bundle automatically. For lighter mobile users, the Classic Pay As You Go tariff will be a more attractive option. With Classic, you’ll pay just 3p/minute, 2p/text and 1p/MB, with no need to top-up your phone every month. Alternatively, the International SIM card allows you to call other countries from 1p/minute. Customers joining O2 Pay As You Go will get access to discounts and offers through O2 Priority. For more information, read our full review of the Big Bundles and Classic Pay As You Go SIM cards. Tip: For £10/month, giffgaff offers unlimited minutes and an extra 1GB of data. giffgaff is owned by O2 and uses the O2 network for coverage. Find out more about giffgaff. |
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Three 5% of our readers choose to join Three*
Regular users can save money by buying a 30-day bundle. Bundles start from £10/month for unlimited minutes, unlimited texts and 2GB of data. The allowances in your bundle can be used abroad in 71 Go Roam destinations including most of Europe, the USA, Australia and more. Customers can also earn Pay As You Go Rewards when buying a bundle from Three. Importantly, it isn’t possible to use a 2G-only handset on Three. This is because Three doesn’t provide any 2G coverage. Your handset will need to support at least 3G coverage to work on the Three network. |
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Vodafone 3% of our readers choose to join Vodafone*
For regular mobile users, it’s possible to buy a 30-day Big Value Bundle (e.g. 250 minutes, unlimited texts and 3GB of data for £10/month). You can rollover unused allowances when you automatically renew your bundle. For occasional mobile users, Vodafone offers the Pay As You Go 1 tariff. On Pay As You Go 1, you’ll be charged 20p/minute, 20p/text and 20p per 5MB of data (capped at £1/day for unlimited minutes, unlimited texts and up to 500MB of data). Order Vodafone SIM card (Free) → Tip: VOXI is Vodafone’s low cost sub-brand, offering much more data for the same price. You can get unlimited minutes, unlimited texts, 6GB of data and endless social data for £10/month. Find out more about VOXI. |
EE offers 250 minutes, unlimited texts and 1GB of internet on their 
O2 offers a choice of three tariffs on Pay As You Go.
Along with O2, Three is one of the UK’s cheapest mainstream mobile networks for traditional Pay As You Go usage. They charge 3p/minute, 2p/text and 1p/MB: the same as what O2 charges and just a little more expensive than 1pMobile.
Vodafone offers a choice of two different tariffs on Pay As You Go.The following virtual network operators also provide a Pay As You Go service:
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1pMobile 6% of our readers choose to join 1pMobile*
1pMobile is a virtual network operator using coverage from EE. The network charges just 1p/minute, 1p/text and 1p/MB: the lowest Pay As You Go rates currently available on any network in the UK. Customers joining 1pMobile need to be aware that a top-up of at least £10 is required every 120 days. If no top-ups are added to your account for more than 120 days, it will be closed automatically and your phone number will be lost. Because of this, we’d only recommend choosing 1pMobile if your typical monthly spend will exceed £2.50/month (otherwise, a non-refundable balance will build up over time on your account). |
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ASDA Mobile 52% of our readers choose to join ASDA Mobile*
 For light users, ASDA Mobile has competitive Pay As You Go rates of 8p/minute, 4p/text and 5p/MB. There’s no need to top-up every month, and your credit won’t expire providing your account remains active (you just need to use your phone at least once every 180 days). You can top-up on ASDA Mobile from just £1 each time. Regular users can buy a bundle from ASDA Mobile for better value usage. It’s possible to get 3GB of internet along with 600 minutes and unlimited texts for £10/month. Alternatively, there’s 1GB for £7/month and 6GB for £15/month. To qualify, order a free SIM card from ASDA Mobile. ASDA Mobile provides 2G, 3G and 4G coverage from EE. This gives them 99% population coverage. |
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C4C Mobile 0.9% of our readers choose to join C4C Mobile*
C4C Mobile is a fairly small Pay As You Go provider, with the unique selling point that they’ll donate 10% of your top-ups to charity. The mobile network offers 3G and 4G coverage from O2 and charges 10p/minute, 10p/text and 10p/MB. Bundles are also available to buy (e.g. 650 minutes, unlimited texts and 1GB of internet for £10/month). |
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CMLink 0.6% of our readers choose to join C4C Mobile*
CMLink is a Pay As You Go provider designed for customers who have a connection to China. Customers can buy a bundle from £5/month, with 1000 minutes being included for calling Mainland China and Hong Kong. Customers on CMLink can also roam at no additional charge when travelling to Mainland China and Hong Kong. In the UK, customers on CMLink will get 3G and 4G coverage from EE. |
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giffgaff 11% of our readers choose to join giffgaff*
Most giffgaff members choose to buy a goodybag bundle. On giffgaff’s £10/month goodybag, you’ll get 3GB of internet along with unlimited minutes and unlimited texts. Goodybag allowances can be used in both the UK and Europe. For lighter users, giffgaff’s £8 goodybag can give you even bigger savings (you’ll get 500 minutes, unlimited texts and 2GB of internet for £8/month). Alternatively, if you’d like more data, you can get 8GB of data for £15/month, 20GB of data for £20/month or Always-On data for £25/month (unlimited downloads with the first 20GB per month at full 4G speeds). On giffgaff, you’ll get free calls and texts to other members (to qualify, you just need to top-up your phone at least once every 3 months). giffgaff also offers discounted rates for international calling. |
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iD Mobile 1% of our readers choose to join iD Mobile*
iD Mobile is the own-brand mobile network from the Carphone Warehouse. Having launched in December 2016, the iD Mobile Pay As You Go service uses coverage from Three. Customers on iD Mobile Pay As You Go will pay 3p/minute, 2p/text and 1p/MB. Alternatively, customers can convert their credit into a one-month bundle such as 500 minutes, unlimited texts and 1GB of data for £10/month. It isn’t possible to use a 2G-only handset on iD Mobile (as with Three, iD Mobile doesn’t have any 2G coverage). |
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Lebara Mobile 1% of our readers choose to join Lebara Mobile*
Lebara Mobile is a specialist provider of international calling. You can buy a 30-day bundle from £10/month with inclusive international calling (e.g. 100 international minutes, unlimited UK minutes and 3GB of UK internet). Alternatively, light users can use traditional Pay As You Go to call abroad from 1p/minute. Lebara Mobile offers 2G, 3G and 4G coverage from Vodafone. For more information, please read our full review of Lebara Mobile. |
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Lycamobile 1% of our readers choose to join Lycamobile*
Lycamobile is another specialist provider of international calling. They offer international calls from 1p/minute and international text messages for 19p each. Domestic calls to a UK mobile are charged at 19p/minute and texts to a UK mobile are charged at 19p each. You can read our full review of Lycamobile here. |
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Orange
As of February 2015, it’s no longer possible to order a SIM card from Orange. Customers are instead advised to join EE Pay As You Go. EE has 4G connectivity and allows you to browse the internet from £1/week. Alternatively, ASDA Mobile gives you coverage from EE but at a much lower cost (8p/minute, 4p/text and 5p/MB). In July 2018, customers remaining on the Orange Pay As You Go service were migrated to EE. |
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The Phone Co-op 0.8% of our readers choose to join The Phone Co-op*
The Phone Co-op (previously known as the Co-Operative Mobile) charges 8p/minute, 4p/text and 10p/MB when you’re browsing the internet (this works out to be around £1/day if you’re using 10MB of data). For regular users, it’s possible to buy an all-inclusive bundle from £10/month. The most popular bundle from Co-op costs £10/month and gives you 500 minutes, 1000 texts and 1GB of 3G internet. In June 2018, The Phone Co-op became a part of The Midcounties Co-operative. Since the merger, you’ll earn 12 points for every £1 you spend on the network, which is equivalent to 5% back on your spend. |
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RWG Mobile 0.8% of our readers choose to join RWG Mobile*
RWG Mobile advertises itself as “the mobile network for Wales”. It uses coverage from the Three mobile network, and offers bilingual customer support in both English and Welsh. |
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Tesco Mobile 1% of our readers choose to join Tesco Mobile*
For regular mobile users, it’s possible to buy a Rocket Pack bundle from £5/month. The most popular Rocket Pack costs £10/month and gives you 500 minutes, 5000 texts and 3GB of 4G internet. For lighter users not purchasing a Rocket Pack, Tesco Mobile has the Triple Credit tariff. Here, you’ll pay 25p/minute, 10p/text and 10p/MB. When you top-up your phone with £10, you’ll also get £20 of bonus free credit which will last for one month. For more information, please read our full review of Tesco Mobile Pay As You Go. |
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T-Mobile
As of February 2015, it’s no longer possible to order a T-Mobile SIM card. Customers wanting to join T-Mobile are instead advised to join EE. EE has 4G connectivity and offers Everything Pack bundles that are very similar to the Smart Packs previously offered by T-Mobile. Alternatively, ASDA Mobile offers 4G coverage from EE with better value monthly bundles from £5/month. Customers already on T-Mobile can stay on their existing plan for as long as they like. |
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Vectone Mobile 0.4% of our readers choose to join Vectone Mobile*
Vectone Mobile is a specialist provider of international calling. See our international calls price comparison table to see how Vectone Mobile compares to rival networks. |
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Virgin Mobile 1% of our readers choose to join Virgin Mobile*
On Virgin Mobile, you can buy a Pay As You Go JAM Pack bundle from £10/month. The £10 JAM Pack will give you 500 minutes, 500 texts and 2GB of internet. This is restricted to 3G speeds, as 4G coverage is only available to Virgin Pay Monthly customers. If you choose not to buy a JAM Pack or run out of your inclusive allowances, you can use traditional Pay As You Go for 40p/minute, 15p/text and £2/day for up to 200MB of internet. This is amongst the most expensive Pay As You Go rates in the UK, so we’d strongly recommend choosing a lower-cost network if you’re a light user. |
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VOXI 1% of our readers choose to join VOXI*
VOXI is Vodafone’s low-cost Pay As You Go network. Customers can buy a one-month bundle from £10 with unlimited minutes, unlimited texts, 6GB of data and endless social data included. For more information, read our full review of the VOXI network. |
Tesco Mobile offers a choice of two Pay As You Go tariffs: there’s For more information about any of the tariffs listed on this page, please click through to the mobile network’s website. Our recommended deal is currently to order a free SIM card from ASDA Mobile.
If you’re asked to specify the size of SIM card required in your phone (e.g. Standard SIM, Micro SIM or Nano SIM), please see our guide to smartphone SIM card sizes.
The “£10 top-up buys” calculation is based on a user who tops up by £10 every month. If you top up less regularly than once every month, your allowances may run out before the next top-up.
* Statistics on mobile network chosen by readers of this article. Based on the number of Free SIM click-throughs from the 1st February 2019 to 30th April 2019.
** Mobile internet charges. For networks that charge on a per-megabyte basis, we have given the average daily data cost for a smartphone user consuming 10MB of data. If you’d like to create a custom comparison using a different estimate, you can enter your own estimated data figure on our interactive Pay As You Go price comparison table.
John said:
Hi Ken
I didn’t know where to put my comment, but I just wanted to thank you for ther entire website. You must spend ages trawling through small print to come up with all the comparison information you present on the website. I’ve had a couple of providers over the years, and trying to figure out how much it will cost me to make different kinds of phone calls has almost made me give up on owning a mobile. I don’t how you are able to do it. But thanks to you it is so very easy to make an informed decision.
Ken replied:
Hi John,
Thank you very much for the kind and generous words! I’m really pleased that you found the website to be useful. Do let me know if there are any other areas of mobile technology that we can help to demystify and make clearer for people to better understand 🙂
Ken
Nessa said:
Hello Ken. Thanks for your great website – so helpful for people like me who’ve just bought their first Smartphone and don’t know which PAYG SIM to get. I work from home so I don’t usually need to use a mobile phone much, but next month I’ll be going to Australia for 17 days and will need to make short phone calls/send texts to various people in Australia while I’m there (but I don’t anticipate needing to contact anyone back home in the UK). What’s the best value SIM to get in that situation? Does the Asda one you’ve recommended work outside the UK? I’ve got a pretty packed programme when I arrive in Australia, so there will be no time to get a SIM there. Thanks in advance for any advice you can give.
Ken replied:
Hi Nessa,
Thanks for your comment. An ASDA Mobile SIM card will work outside the UK but you’ll pay a fairly hefty international roaming charge (87p/minute to make and receive calls, 40p to send a text message and £7.50/MB to access the internet). Instead, I would possibly suggest getting a Three Pay As You Go SIM card. Their Go Roam offer will allow you to use your mobile phone in Australia at no extra charge (including calls to UK-based numbers and mobile data whilst you’re there). Unfortunately, it doesn’t include calls to Australian phone numbers (if you need this as a feature, you’re probably best off getting a local SIM card whilst you’re there).
Ken
Nessa replied:
Thanks a lot, Ken. I really appreciate your speedy and helpful reply. Maybe I’ll get the Three SIM in the short term and switch to the Asda one when I’m back. Thanks again for your wonderful website – I’ll be recommending it to all my friends.
Jean Marc said:
I’m from Canada and will be travelling in France and Italy next September. I will need a Sim card that will give me talking time and some data. I will only need it for a 20 day period. I’m wondering if any of the Pay As You Go sim cards listed above would be an appropriate choice for such a short period of time?
Ken replied:
Hi Jean,
Many thanks for your comment. Unfortunately, the SIM cards on this page are really designed for people who are coming to the UK. If you’re visiting Europe, I’d typically recommend getting a SIM card in your country of arrival.
Hope this helps,
Ken