By giffgaff is currently offering their best ever unlimited data deal, at only £14 per month for 18 months. You’ll get 5G coverage from O2, plus roaming in the EU (up to 5GB per month).
If you’re looking for an affordably-priced unlimited data SIM, giffgaff has reduced their 18-month unlimited data deal to its lowest ever price of just £14 per month. This deal comes with inclusive EU roaming (up to 5GB per month), and no mid-contract price rises for the whole of your minimum term.
Get unlimited data for £14 on giffgaff →
Alternatively, if you’re looking for even more flexibility and you don’t want to be tied down on a contract, they’ve also reduced the monthly rolling version of this plan, so you can get unlimited data for £20 per month with no contract.
In this article, we’ll look at giffgaff’s unlimited data offers which are available until the 2nd October 2026. We’ll also look at the key features that are included, and how you can keep your current phone number when you move to giffgaff.
| Special Offer: | Unlimited data for £14 (18 month contract) |
|---|---|
| Key Features: |
|
| No Contract Plan: | Unlimited data for £20 (1 month rolling plan) |
| Offers End: | 2nd October 2026 |
| Coverage: | O2 coverage (4G & 5G) – check postcode |
Activate plan by 2/10/26. £14 unlimited data for duration of 18 month commitment, then reverts to £25/month. £20 unlimited monthly rolling for 12 months, then reverts to £35/month, must be set to auto-renew. Existing Members must opt-in via the app. Eligibility criteria, exclusions, fair usage policy, data roaming restrictions and terms apply, see giffgaff.com/terms/promotions
† For all plans with over 5GB UK data, data roaming in EU and selected destinations is capped at 5GB. You’ll be charged 10p/MB once 5GB is used if no add-on is applied.
giffgaff Unlimited Data Plans
£14 Unlimited Data Plan
As a special offer until the 2nd October 2026, giffgaff has reduced the price of their 18-month unlimited data plan to their lowest ever price of £14 per month.
On this deal, you’ll pay just £14 per month for the whole of your minimum term, allowing you to save a massive £198 over the 18-month contract:
| Network | Data | Monthly Cost | |
|---|---|---|---|
Offer ends 2nd Oct | Unlimited data | £14.00 per month 18 month contract | See deal |
There’s no credit check needed when you sign up for this deal. You’ll get 4G & 5G coverage on O2’s network in the UK. On top of that, you’ll be able to use your mobile phone at no extra cost in 38 European destinations (up to 5GB per month).
Before you sign up, it’s worth a look at giffgaff’s fair use policy. Essentially, this talks about how they monitor usage of their service in order to keep things fair for their members. In this fair usage policy, giffgaff says they reserve the right to monitor your usage, and that you should keep your data usage below 650GB per month. You should also avoid regularly tethering your phone to 12 or more devices.
Monthly Rolling Plan
If you don’t want to commit to an 18-month contract, giffgaff has additionally reduced the price of their unlimited data monthly rolling plan.
This is now available for just £20 per month, saving you a massive £15 per month compared to their regular price (which is £35 per month). On this deal, you’re able to benefit from the reduced price for up to 12 months.
| Network | Data | Monthly Cost | |
|---|---|---|---|
Offer ends 2nd Oct | Unlimited data | £20.00 per month 1 month rolling | See deal |
As on the 18-month contract, there’s no credit check required for this deal and you’ll get inclusive EU roaming (up to 5GB per month).
What’s Included?
Flexible Plans
On all of giffgaff’s SIM-only plans, you have the option to change your plan over time.
If you’re on an 18-month plan, you’ll be able to move upwards or downwards to any other plan within giffgaff’s 18-month range. When you do this, it won’t reset the term of your commitment and you won’t incur any early termination fees for changing your plan. You can log in to your giffgaff account for more details on switching your plan mid-contract.
If you’re on a one-month rolling plan, you’ll be able to change to any other plan within giffgaff’s range, whenever you like. This will take effect on your next plan renewal date.
No Credit Check
There’s no need to undergo a credit check when you sign up for giffgaff’s unlimited data SIM-only deals. This makes it really quick and easy to sign-up, without the need to provide lots of obscure information. It also means their SIM-only plans are open to everyone, regardless of what your credit rating or credit history looks like.
If you choose to buy a mobile phone from giffgaff, a status and credit check will apply if you choose to take out a payment plan from Klarna. However, there’s no credit check if you decide to pay for it in one go.
No Mid-Contract Price Rises
On many other mobile networks, it is common to have an annual price rise built-in to your plan. This can increase the cost of your plan by up to £2.50 per month each year.
For all 18-month contracts purchased before the end of 2026 (fair usage policy, terms and exclusions apply, see giffgaff.com/terms), giffgaff has guaranteed that there’ll be no mid-contract price rises.
For the one-month rolling plan, you’re guaranteed to save £15 per month for 12 months after you sign up on the unlimited data plan.
Certified B Corp
The ‘B Corp’ movement is a global initiative for businesses that commit to being a force for good. Their member companies make legal commitments to their social and environmental impact, as well as transparency in the way they run their business. This has established it as a key trust mark for consumers seeking an ethical brand.
giffgaff is a certified B Corp with a score of 97.6. This score is based on five main areas: how they treat their customers, colleagues, the community, the environment, and how they run their business.
According to giffgaff, they’ve generated more than £1m worth of charitable donations together with their members. In addition, all of their SIM cards are made from recycled plastic, and dispatched in fully recyclable packaging. In addition, giffgaff offers a choice of refurbished mobile phones, allowing members to save money and to be more sustainable.
4G & 5G Coverage From O2
giffgaff is powered by the O2 network. On their unlimited data plan, you’ll get both 4G coverage and 5G coverage included as standard.
Before you sign up to giffgaff, it’s worth checking to make sure you can get coverage where you live. You can do this by entering your postcode on giffgaff’s online coverage map:
Check giffgaff coverage (giffgaff.com) →
5G T&Cs: 5G available in selected areas, see https://www.giffgaff.com/help/articles/does-my-area-have-5g-coverage. 5G device and sim required and 5G must be switched on in your giffgaff account.
Inclusive EU Roaming
When you travel abroad, you’ll be able to use the allowances from your plan in 37 European destinations at no extra cost (up to 5GB per month). This includes many popular tourist hotspots such as Spain, Italy, France, Portugal and more.
If you’re travelling further afield (e.g. to the USA, Australia, China, Hong Kong, India, Turkey, and more), there are a range of travel data add-ons available to buy from giffgaff.
Add-on price varies. Data only, valid for 30 days or until used. No calls/texts. Selected destinations. Via app only. Fair usage policy, data roaming restrictions and terms apply.
giffgaff App & Community
You can use the giffgaff app to manage your account, including seeing how much data you’ve used and what’s left on your plan. It will also give you free access to thousands of Wi-Fi Extra hotspots across the UK.
If you need help and support, this is available through giffgaff’s online community. According to giffgaff, the majority of questions asked in their community will get answered by other giffgaff members within two minutes. For any account-specific queries (e.g. to do with your SIM card or payments), you can ask a giffgaff agent online.
Keeping Your Phone Number
It’s easy keeping your current phone number when you switch to giffgaff.
Start by ordering your new unlimited data plan from giffgaff’s website. Once you’ve done that, you can ask your current mobile network for a PAC Code. This is available through your mobile network’s website or app, or by texting PAC to 65075.
Once you’ve activated your new giffgaff SIM, you’ll be able to submit your PAC Code online through a form on their website. This will schedule the transfer of your phone number (normally for the next working day, as long you submit it before 3pm).
For a step-by-step guide on how to transfer your phone number to giffgaff, please select your current mobile network from the drop-down menu below:
More Information
For more information about giffgaff’s unlimited data offers, see giffgaff’s official website.
Philip Arthur said:
Since November 2020 till beginning of April this year l had unlimited calls for free.
Now, after adding more credit, for an overseas call, l am being charged for every local l make!
Can anyone tell me the reason for the above and how l can go back to having unlimited access to giffgaff?
Ken replied:
Hi Philip,
Thanks for your comment. Are you referring to the free giffgaff-to-giffgaff calls? I believe this requires you to top-up by £10, after which you’ll get free calls to other giffgaff customers for the next 3 months.
Ken
Philip Arthur replied:
No. I made regular calls to my doctor over the previous 5 months using my giffgaff and called them via landline (that is to say the sugery are not giffgaff subscribers).
How can l go back to my original account agreement between us. That is to say unlimitted calls and automatic top up each month of £8?
Ken replied:
Hi Philip,
Ah, ok that makes sense now. I think you previously had a giffgaff goodybag bundle on your account? You can now get a goodybag from £6/month that includes unlimited calling. If so, there should be an option to buy that inside your giffgaff account area or app.
Ken
Ebony Patterson said:
I bought this plan before realising that my router arrived with a Smarty SIM already. I have good signal strength, the router is in the best spot in the flat and there are no reported network/coverage issues with O2 in the area. I have only just started using the pan and only get maximum 2-3 mbps upload and 0.5-1.5 download. When the plan runs out I will try Smarty for comparison.
Demi said:
I have 1 one day left on my giffgaff always on data will it run out at midnight or the time I purchased it a month ago?
Ken replied:
Hi Demi,
Thanks for your comment. I believe all of giffgaff’s bundles run until midnight.
Ken
candice said:
can i use a always on data goodybag in.my tablet
Ken replied:
Hi Candice,
Thanks for your comment. Yes, you can use your Always On goodybag in any device, including a 4G tablet.
Hope this helps!
Ken
lorna hunt said:
hi just a quick question, i have a £25 goody bag with gift gaff and this month i have used 120GB or so. all this has been in the UK am i going to get charged extra for this?
Ken replied:
Hi Lorna,
Thanks for your comment. No, you won’t be charged any extra for this. You get unlimited downloads on the £25 goodybag (albeit, with reduced speeds after the first 40GB per month).
Hope this helps,
Ken
Steven hurst said:
I must say thank you for this page. Your information has covered everything I needed to know. Im with virgjn media home broadband and have given them my 30 days notice. As I’ve just started using my phone for my internet use more and more. So I’ve decided to try giffgaff always on data £25 and try out tethering to my desktop computer as I don’t like doing my banking etc on my phone. I’m already on o2 mobile phone so everything should be straight forward. I don’t actually know how much data I normally use on my broadband so I’m hoping 40 gb is enough. But as this is not a contract it’s worth a try for one month to test it out
Clarence Chuah said:
Hi guys justs a quick question.
While roaming in Europe, and I limited to 3G speed or full 4G for 20GB? Planning to purchase the $25 plan.
Thanks
Clarence
Ken replied:
Hi Clarence,
Thanks for your comment. 4G roaming is available in the countries listed here. I believe download speeds are only reduced once you’ve used 40GB of data in one month.
Hope this helps,
Ken
chipz chipping said:
Hey, it appears that I’ve ended up in the ‘well..it’s not really, er, how do I put this, er, it’s not what we in the business call, erm, always on as such…?’ sort of area. After the first 20gb is used, I’m actually left with 0.4mbps download speed an long with a mighty 0.3mbps at 7.10pm!?WWWHHHAAAATTTTT?????
chipz chipping replied:
Sorry, yes your right it is now 4G.
Ken said:
Hi all,
Great news! You can now get 40GB of full-speed 4G data on the £25 goodybag. The article above has been updated to reflect this 🙂
Ken
Rich Baxter said:
This is not at all accurate. What GiffGaff don’t say until you read the small print (or even smaller print) is that after you use the 20GB, yes you drop to the slower speeds but you also have to pay 47p per MB used (yes, thats Mega Byte) after the 20GB. This is surely going to hurt a lot of people. I’ve already used over 10GB in 5 days so I am glad I read that as I’m stopping the service immediately.
This is for roaming in the EU.
Ken replied:
Hi Rich,
Thanks for your comment. As you say, giffgaff has a 20GB fair usage policy for roaming in Europe. If you’ve used more than 20GB of data, you’ll be surcharged 0.47p/MB (equivalent to £4.70/GB). However, this isn’t actually unique to giffgaff – most other mobile networks also have a fair usage policy for roaming in Europe!
Ken
steven moran said:
Why wont it let me buy a £25 goody bag as mine ran out
Ken replied:
Hi Steven,
I believe it should normally be possible to renew your goodybag early when you have less than 100 minutes, 100 texts or 100MB remaining on your goodybag. On the £25 Always-On goodybag, you should also be able to renew it early once you’ve used 20GB of data per month. If the system isn’t allowing you to do this, I recommend asking your question again over at giffgaff’s online community.
Ken
Amelia said:
So I’m confused. I want to get a data package that means I’ll always have data and for a cheap price which is why I chose giffgaff.
I’m unsure whether or not this is unlimited or not and if I’d be better getting the £20 deal.
Also is my bank card automatically charged every month or do I do that myself manually??
Ken replied:
Hi Amelia,
Thanks for your comment. giffgaff’s £25 goodybag is unlimited in some sense, though it’s worth being aware of the speed restriction once you hit 20GB per month. Personally, I’d probably go for the £20 goodybag unless you definitely know you need more than 20GB per month! You can then change your goodybag as required in subsequent months based on the amount of data you actually use.
With regards to how you’re charged for this, you’re not charged automatically every month by default. However, if you like, you can enable the automatic top-up & automatic goodybag purchase feature within your giffgaff account interface.
Hope this helps,
Ken
Ken said:
Hi all,
Just a quick note to say that giffgaff have updated their Always On goodybag. It has now gone up in price from £20 to £25 per month. However, you can now use 20GB of data at full 4G speeds, before the maximum speed is limited to 384kbps between 8am and midnight.
I’ve updated the article above to reflect these changes.
Ken
jim boonman said:
Dude 2. Giffgaff backend for data is shocking in some locations. All you can eat… yeah from a tap that drips once a minute.
Dan said:
Dude your forgetting to inform people that gigfgaff have a secret limit on always that means they can ban you from rebuying it ….. So one month you will be always on the next you won’t and they ban you for 3 months from purchasing always on …..three can not be compared to gigfgaff at all. On. Three you can use 100 or 200gb. No fuss …..on gigfgaff u dare even approach 15 to 20gb your banned although 384 kilobits. Isn’t gonna get you far and it’s not enough to stream. YouTube or Netflix I mean off gigfgaff labled the speed restriction in kylobytes you would realize that also vectone are doing amazing deals I get 30 gb pay as you go for a tenner a month
Sandra replied:
Three stops all their services once you reach 30gb. Be aware they will blame your post code area. They even stopped the calling service and everything once I reached 50gb. They give me 10-30kbps speed at most of the day. They are evil.