giffgaff SIM only deals

Our best giffgaff SIMs this week

Compare giffgaff SIM only deals

giffgaff is best known for its flexible SIM only plans, with options ranging from cheap bundles to unlimited data. Prices can be as little as £6 per month, making it one of the most affordable networks on the market.

You can choose between:

• Monthly rolling plans: No contract, change anytime
• 18-month contracts: Often better value for higher data
• Pay As You Go options: For maximum control over spending

Why choose a giffgaff SIM only deal?

• Great value: Low monthly prices across a wide range of plans
• Flexible plans: Change or cancel monthly on rolling options
• Strong coverage: Uses O2’s network, covering around 99% of the UK population
• No mid-contract price rises: giffgaff guarantees no mid-contract price increases on 18-month contracts
• 5G included: Available at no extra cost on all plans
• No credit checks: On standard rolling and PAYG plans
• Community rewards: Earn Payback points for helping others or referring friends

giffgaff’s focus on simplicity and flexibility makes it especially appealing if you want to stay in control of your mobile costs.

What to look for in a giffgaff SIM contract

When choosing a giffgaff SIM, the main things to consider are how much data you need and how much you want to spend.

• Contract type: Choose between 18-month contracts, which offer better value and data, or 30-days rolling contracts for flexibility
• Data allowance & 5G: Choose a plan based on usage; all plans now include 5G at no extra cost
• EU roaming: 5GB of your data allowance can be used in the EU at no extra cost
• Flexibility: giffgaff allows you to change your data plan up or down each month, even on 18-month contracts
• Customer support: Primarily online and through the community forum, with no phone-based customer service

All plans include unlimited UK calls and texts, so your main decision is your data allowance. Plans range from a few gigabytes per month to unlimited data, and you can switch plans easily if your usage changes.

See the Best SIM only deals in the market to compare giffgaff.

giffgaff’s best rolling contract SIMs

giffgaff is best known for its 30-day rolling SIM only plans, often called “goodybags”. These are ideal if you want flexibility without committing to a long contract.

You can change, pause or cancel your plan each month, while still getting unlimited UK calls and texts and a range of data options.

giffgaff’s best 12-month SIM deals

giffgaff doesn’t typically focus on 12-month SIMs. Instead, it mainly offers 30-day rolling plans and some longer 18-month options.

If you’re looking for a fixed-term deal, it’s worth comparing what’s currently available, but giffgaff’s main appeal is its contract-free flexibility.

giffgaff’s cheapest SIM only deals

giffgaff’s cheapest SIM only deals are suited to light users who mainly need calls, texts and a small amount of data.

With plans starting from around £6 per month, even entry-level options include unlimited UK calls and texts, helping keep costs low and predictable.

giffgaff best unlimited data SIMs

giffgaff offers unlimited data plans alongside its standard data bundles. These plans are typically more expensive than lower-data options, so they’re best suited to heavy users who regularly stream or download on the go.

Is giffgaff a good network?

giffgaff runs on O2’s network, meaning it offers broad UK coverage and reliable performance in most areas. While speeds may vary depending on location and network traffic, performance is generally in line with O2.

One of giffgaff’s key differences is its community-led support model. Instead of traditional call centres, customers can get help via online forums and support agents, and earn rewards through its Payback scheme.

How does giffgaff compare to other networks?

Data from the latest January 2026 Opensignal UK Mobile Network Experience report

giffgaff, VOXI, SMARTY, iD Mobile and Tesco Mobile are all low-cost mobile networks that use the same infrastructure as the UK’s four major providers.

giffgaff and Tesco Mobile both run on O2’s network, making them good options for flexible SIM-only plans, rewards and reliable everyday coverage.

SMARTY and iD Mobile benefit from Three’s fast 5G speeds and competitive unlimited data plans, while VOXI combines Vodafone’s strong coverage with social and streaming perks.

Can I use my giffgaff SIM abroad?

Yes, you can use your allowance in the EU and selected destinations at no extra cost, subject to a fair usage policy. Data usage abroad is typically capped at around 5GB per month, depending on your plan.

Can I get 5G giffgaff SIMs?

Yes, all Giffgaff SIMs are 5G-ready. You’ll just need a 5G-compatible phone and to be in an area with 5G coverage to access it.

Can I keep my mobile number if I switch to an giffgaff SIM only deal?

Yes, you can keep your number by requesting a PAC (porting authorisation code) from your current provider and giving it to giffgaff.

Do I need an unlocked phone to use an giffgaff SIM?

Yes, your phone needs to be unlocked to use a giffgaff SIM. Most phones sold in recent years are already unlocked, but it’s worth checking with your provider if you’re unsure.

Does giffgaff offer SIM plans for bad credit?

Yes. Most giffgaff plans require no credit check, particularly its monthly rolling and Pay As You Go options. This makes it a good option if you want a SIM only deal without undergoing a credit assessment.

Should I get unlimited calls and texts?

All giffgaff plans include an unlimited SIM plan for UK calls and texts as standard. This means you only need to focus on choosing the right data allowance for your needs.

Is giffgaff a good choice for rural coverage?

giffgaff is a good choice for rural coverage in the UK because it operates on the O2 network, which provides 99% population coverage. While rural, O2-based coverage is extensive for calls and texts, users may experience slower data speeds compared to other networks, particularly in remote areas.

Is giffgaff a good network for gaming and streaming?

giffgaff is a decent, budget-friendly option for streaming and casual gaming, but it may not be the best choice for competitive, high-performance gaming due to slower average speeds compared to premium networks. As a "piggyback" network, it uses O2 infrastructure, offering excellent 99% UK population coverage but with lower data priority.