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Best Pay-as-you-go Sim Deals

£10/mth for 600 mins, unltd texts & 2GB of 4G data

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Nick | Edited by Steve N

Updated Weekly

payg introWhen you hear 'pay-as-you-go', you might think of the early days of mobiles, when it was common to pay upfront for each pricey call and text. But now it's possible to get great value pay-as-you-go 'bundles', giving a better value allowance and also tighter control over your bill.

If that's what you're after – or even if you just want a back-up Sim for occasional use – then here you'll find all you need to know about pay-as-you-go, including where to find the best deals and our own top picks.

Is pay-as-you-go right for you? Before reading this guide...

  • Concerned about a credit check or want a tighter control over your bill? A pay-as-you-go bundle is probably a good bet. Read on...
  • Happy to commit to a contract? Sim-only generally offers better value.
  • Want a new phone but can't afford to buy it upfront? Traditional mobile contracts usually cost more – for other options, see Buying a new mobile.

Pay-as-you-go need-to-knows

Before you take out a PAYG deal, here are the key things to consider:

  • 'Traditional' PAYG or bundled PAYG?


    While pay-upfront mobile deals which don't require a credit check are all generally referred to as pay-as-you-go (PAYG), there are actually two types to choose from:

    1. 'Traditional' PAYG – where you really do pay as you go. This is the traditional model where you top up with credit and are then charged for each minute, text and MB as you use it. Though a couple of providers do this cheaply, it's generally worse value so is better for an emergency-use or back-up Sim. These are the top providers' rates:

      'Traditional' PAYG rates compared
      Calls Texts Data
      Three* 3p/min 2p 1p/MB (4G)
      Asda Mobile 8p/min 4p 5p/MB (4G)
      Giffgaff* 15p/min 5p 5p/MB (4G)
      EE* 30p/min 12p N/A1
      O2* 5p/min 5p 5p/MB (4G)
      Vodafone* 30p/min 14p

      £2/day2 (4G)

      1. Cannot pay for data as you go, must buy a 4G data add-on/pack. 2. For the first 50MB, 10p/MB thereafter. (Prices correct as of 11 June 2017)
    2. PAYG 'bundles' – where you pay before you go, for a bundle. What tends to give better value is buying a bundle of minutes, texts and data with your credit once you've topped up. These bundles nearly always last for a month, after which you'll need to buy another. There are many to choose from (see our top picks below). As a rough guide, here's what a tenner will get you

  • You'll need to have an unlocked phone – it's usually free to get it done


    If you have an existing handset which you originally bought on a traditional contract, it may be locked to the network that sold it to you (to check, just pop in another network's Sim). If so, you'll need to get it unlocked in order to make sure your new provider's Sim will work in it.

    All the networks will now do this for free if your contract's minimum term has expired – however, if it hasn't, or you bought the phone on PAYG, they may charge up to £20. Unlocking usually takes up to 10 days – see the Mobile Unlocking guide for a full list of providers' unlocking policies and how to do it.

  • Get the allowance you actually need

    Don't be sold on overly generous allowances that you'll never use. Do you really need unlimited minutes or 6GB of data? Most don't use anywhere near that – check your actual past usage with an online tool.

    There are three sites accredited by regulator Ofcom to choose from. Each will analyse your bills from the last three months to determine your average usage and suggest deals based on this.

    • Billmonitor* works with customers of EE, O2, Tesco Mobile, Three and Vodafone. It's not quite as user-friendly as MobilePhoneChecker (below), though it gives a more detailed bill analysis.
    • MobilePhoneChecker*, though not as thorough as Billmonitor, works with more networks – the big four (bar Vodafone), plus BT Mobile, Plusnet, Giffgaff, iD Mobile, TalkMobile, Tesco Mobile and Virgin Mobile.
    • Ctrlio will handily remind you when better deals at your usage become available (either monthly or just at the end of your contract), though currently it can only read the bills of Three, EE, O2 and Giffgaff.

    MobilePhoneChecker is also useful for when you're ready to locate the best pay-as-you-go deals.

  • Signal strength can vary – check it in advance at home and work


    You can get an idea of signal strength in a particular area with Ofcom's Telecoms Coverage Checker. This'll show you results for the four main networks – EE, O2, Three and Vodafone. Don't just put your home address in either – check where you work and anywhere else you want to be sure of getting good reception.

    Many other smaller mobile providers 'piggyback' off these networks, using their signal, and they can better offer better value – the signal's the same so you can still check in advance using Ofcom's tool. See a full list of which provider is on which network in our Mobile Piggybacking guide.

    For a more accurate indication than Ofcom's checker can give you, it may be worth picking up a free pay-as-you-go Sim from the network you're considering, topping it up with a bit of credit and putting it to the test before committing.

  • Switching from a contract? Serve your notice to leave ASAP


    Most contracts require at least 30 days' notice to cancel, meaning as a minimum you'll have to pay for this many days once you tell your provider you're leaving. Plans roll over at the same price, and if yours came with a handset this could be £50+/month – so you don't want to be paying for it any longer than necessary.

  • The first thing you want to do before even looking for a new deal is call up, tell 'em you want to leave and request your PAC (porting authorisation code) to keep your number. Then use the 30-day notice period to find yourself a new deal while the clock ticks down.

    If you change your mind within that time you can always tell your network that you've decided to stay – plus it's more likely to get in touch with a better deal once it thinks you're serious about leaving (always do your homework before agreeing to anything it offers though).

  • You can keep your number – here's how

    pac payg

    When you called up to hand in your notice, you should have been offered your PAC, which you'll need to keep your number when you move to a new network. But if you didn't get it then, you should still be able to call up and get it as long as your pre-existing contract hasn't been terminated yet.

    Though the process varies depending on which firm you're moving to, once you've got your new (temporary) number from your new network you'll then need to fill in an online form.

    The switch usually takes place the next working day after submitting your PAC.

    If you're switching to a new tariff on the same network, you shouldn't need to carry out this process – call customer services and they should be able to sort it.

Pay-as-you-go top-pick Sims

Once you know which network(s) you're happy to go with and what allowance you need, find the best deal you can that fits with this.

Below we've listed our top-pick pay-as-you-go deals for different categories of user – mid-level users, heavy users, cheap 3G-only deals, for occasional use and those who want a deal for roaming. Because for some signal is the overriding factor, we've also listed the top alternatives for each of the other three main networks (or a network that piggybacks on it).

In all but the occasional use category, we've listed PAYG bundles rather than traditional PAYG tariffs, which tend to be more expensive – see Traditional vs bundled PAYG for more. For a broader range of deals if you can't find one of our top picks that matches your criteria, use a comparison site such as MobilePhoneChecker.

Mid-level users

Here are top picks for mid-level users, with at least 2GB of 4G data and 250 mins a month.


600 mins, 2GB (4G): £10/mth*


Piggybacking off the EE network, Asda Mobile* offers this cheap pay-as-you-go tariff for new customers. For £10/mth you'll get 600 minutes, unlimited texts and 2GB of data which should be enough for most in the mid-use category.

If you opt for the Asda deal and use up all your bundle within 30 days you'll have to top up with airtime credit and you'll be charged out-of-bundle prices.

  • Runs off the EE network.
  • Out-of-bundle charges are 8p/min, 4p/text and 5p/MB.
  • No credit check.
  • Tethering is permitted.

If you can't get EE signal where you live...

These are the best of the rest with at least 2GB of 4G data a month.

  • Giffgaff*: 500 mins, unltd texts, 2GB – £10/mth.
  • TPO* (Piggybacks off Three): 300 mins, unltd texts, 2GB – £10/mth.
  • Vodafone*: 500 mins, unltd texts, 4GB – £20/mth.

Heavy users

For the data fiends out there, these are our top picks with 5GB+ of 4G data and a healthy number of minutes.


1,000 mins, 5GB (4G): £15/mth*


Piggybacking network Giffgaff* (it runs off O2's signal) is a top pick in this category. The 'Goodybag' we're highlighting for heavy users is the £15/mth one, which gives a 1,000 minutes, unlimited texts and 5GB of 4G data.

If you do run out of minutes or data you can purchase another Goodybag if you don't want to wait until your current one expires. Note though – if you do this, you'll lose any remaining allowance you had on the existing Goodybag.

  • Buy bundles on a 30-day rolling basis.
  • Runs off the O2 network.
  • Out-of-allowance charges are 15p/min and 5p/text and 2p/MB; after the Goodybag ends it's 5p/MB.
  • No credit check.

If you can't get O2 signal where you live...

These are the best of the rest with 5GB+ of 4G data a month.

  • Three*: 300 mins, 3,000 texts, 12GB – £20/mth.
  • Vodafone*: Unltd mins, unltd texts, 12GB – £30/mth.
  • Asda Mobile* (Piggybacks on EE): 1,000 mins, unltd texts, 5GB – £15/mth.

Low users

These are our top picks with 1GB+ data a month – in this category we also include 3G-only tariffs, which can be great value if you're not bothered about getting the fastest speeds.


300 mins, 1GB (4G): £7/mth*


Asda* offers this pay-as-you-go deal for new customers. For £7/mth you'll get 300 minutes, unlimited texts and 1GB of data which should be enough if you're just checking emails and browsing.

If you opt for the Asda deal and use up all your bundle within 30 days you'll have to top up with airtime credit and you'll be charged out-of-bundle prices.

  • Runs off the EE network.
  • Out-of-bundle charges are 8p/min, 4p/text and 5p/MB.
  • No credit check.
  • Tethering is permitted.

If you can't get EE signal where you live...

These are some other cheap tariffs on other networks:

  • Giffgaff* (piggybacks on O2): 500 mins, unltd texts, 2GB (4G – no cheaper 3G-only option) – £10/mth.
  • Lebara Mobile (piggybacks on Vodafone): 1,000 mins, 100 texts, 2GB (3G) – £10/mth.
  • Tello (piggybacks on Three): 100 mins, 100 texts, 1GB (4G – no cheaper 3G-only option) – £9/mth.

For occasional/back-up use

It can be useful to keep a spare Sim for emergency use in case you lose your phone, or perhaps for entering competitions or listing adverts where you're not comfortable giving your main number. This is where traditional PAYG deals rather than bundles can win.


'True' pay-as-you-go: 3p/min, 2p/text, 1p/MB (4G)*


The 321 tariff from Three* does what it says on the tin – it's a simple and cheap tariff, charging on a purely pay-as-you-go basis. It's a cracking deal for occasional mobile users, by far the cheapest traditional PAYG rate on the market.

It'll only work in 3G-compatible handsets, so older non-smartphones are a no-no.

How much is it? Top up online with £5 minimum (£10 in store) and it costs 3p/min for calls, 2p/text and 1p/MB for data (though the first 10MB after each top-up is free).

You'll lose credit after six months if you don't use it – but use your phone occasionally and it'll stay on permanently.

If you can't get Three signal where you live...

These are the best of the rest:

  • O2: 5p/min, 5p/text, 5p/MB (4G).
  • Lebara Mobile (piggybacks on Vodafone): 9p/min, 15p/min mobiles, 19p/text, 9p/MB, 3G-only.
  • Asda (piggybacks on EE): 8p/min, 4p/text, 5p/MB (4G).

For roaming abroad

Those on Three's 'Advanced' contracts get to use their allowance for free in 42 countries and territories including the US, Australia and most of Europe. However, pay-as-you-go users who convert their credit into a bundle can get the same benefit.

This is the perfect trick for the occasional trip abroad, if you're heading to one of the covered countries. Alternatively, if you go away often enough it might be worth getting a more generous bundle and paying for it every month.


Roam for free in 60 destinations*


Here's how to get yourself free roaming in 60 countries and territories without tying yourself into a contract with Three:

  1. Order a free PAYG Sim from the Three* website – it'll work in any unlocked 3G or 4G phone. You can also buy one in store – it normally costs £1, but the fee's waived if you top up at the same time (£10 minimum).

  2. You'll then need to use your credit to buy a Three add-on bundle of calls, texts and data. To do this, log in to your 'My 3' account or call 333 using your new Sim. Bundles range from £5 to £25 – here are a few examples:

    • 3,000 'Three to Three' mins only OR 3,000 texts only OR 500MB data only, for £5/mth
    • 100 mins, 3,000 texts, 1GB data for £10/mth
    • 500 mins, 3,000 texts, unltd data for £25/mth
  3. Your Sim should already be activated for international roaming, so Feel At Home should work automatically when you arrive in any of the countries covered. You'll be able to use the allowance in your add-on in the same way as in the UK.

Add-ons and their allowances last 30 days. Any leftover credit not used towards a bundle expires after six months if you don't use it.

For more information about Feel At Home and how it works, including its restrictions, see Cheap Mobile Roaming.

Other roaming Sim deals

It's possible to get Sims with other networks that include roaming allowances, but they're generally not very competitive. For more tips on how to cut the cost of using your mobile abroad, see our Cheap Mobile and Data Roaming guide.

How to complain about your network

The mobile industry doesn't have the best customer service reputation and while a provider may be good for some, it can be hell for others. Common problems include limited network coverage, slow data speeds, unexpected charges and more. It's always worth trying to call your provider first, but if not then…

Free tool if you're having a problem

This tool helps you draft your complaint and manage it too. It's totally free, and offered by a firm called Resolver which we like so much we work with to help people get complaints justice.

If the complaint isn't resolved, Resolver will escalate it to the free Ombudsman Services (or CISAS if you're complaining about EE or Virgin Mobile).

Important: if your issue is about a voucher or incentive that was part of an MSE Blagged deal, then instead just let us know by emailing as that's usually quicker.

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