giffgaff’s £14 Unlimited Data Plan: With 5G Coverage & Inclusive EU Roaming

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:	Flexible SIM-only plans with no credit check. No mid-contract price rises on an 18-month contract. Use your plan at no extra cost in the EU (up to 5GB per month)†. Certified B Corp network.
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
O2 coverage Unlimited mins Unlimited texts	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
O2 coverage Unlimited mins Unlimited texts	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.