giffgaff SIM Only on golden goodybag with Unlimited mins & texts; 2GB of 5G data. £6 Topup
2 GBof 5G data
Rollingno contract
£6.00a month
No upfront costNo mid-contract price riseBuy now
at giffgaffDeal details
- 5G
- No contract
giffgaff SIM-only deals
giffgaff is no-contract SIM-only on O2's network, change or cancel any month, no credit check needed. Compare every Goodybag below.
Black Fridaymarks a deal the provider has named as a Black Friday offer.
List of SIM-only deals (23)
23 deals · from 1 retailer · Updated 3h ago
giffgaff SIM Only on goodybag 1GB with Unlimited mins & texts; 1GB of 5G data. £6 Topup
1 GBof 5G data
Rollingno contract
£6.00a month
No upfront costNo mid-contract price riseBuy now
at giffgaffDeal details
- 5G
- No contract
giffgaff SIM Only on golden goodybag with Unlimited mins & texts; 5GB of 5G data. £8 Topup
5 GBof 5G data
Rollingno contract
£8.00a month
No upfront costNo mid-contract price riseBuy now
at giffgaffDeal details
- 5G
- No contract
giffgaff SIM Only on goodybag 4GB with Unlimited mins & texts; 4GB of 5G data. £8 Topup
4 GBof 5G data
Rollingno contract
£8.00a month
No upfront costNo mid-contract price riseBuy now
at giffgaffDeal details
- 5G
- No contract
giffgaff SIM Only on 40GB (18 Month contract) with Unlimited mins & texts; 40GB of 5G data. £8 a month
40 GBof 5G data
18 monthscontract
£8.00a month
No upfront costNo mid-contract price riseBuy now
at giffgaffDeal details
- 5G
giffgaff SIM Only on goodybag 15GB with Unlimited mins & texts; 15GB of 5G data. £10 Topup
15 GBof 5G data
Rollingno contract
£10.00a month
No upfront costNo mid-contract price riseBuy now
at giffgaffDeal details
- 5G
- No contract
giffgaff SIM Only on 25GB (18 Month contract) with Unlimited mins & texts; 25GB of 5G data. £10 a month
25 GBof 5G data
18 monthscontract
£10.00a month
No upfront costNo mid-contract price riseBuy now
at giffgaffDeal details
- 5G
giffgaff SIM Only on golden goodybag with Unlimited mins & texts; 20GB of 5G data. £10 Topup
20 GBof 5G data
Rollingno contract
£10.00a month
No upfront costNo mid-contract price riseBuy now
at giffgaffDeal details
- 5G
- No contract
giffgaff 25GB, £10/mo, 18-month contract
25 GBof 5G data
18 monthscontract
£10.00a month
No upfront costNo mid-contract price riseBuy now
at giffgaffDeal details
giffgaff SIM Only on golden goodybag with Unlimited mins & texts; 26GB of 5G data. £12 Topup
26 GBof 5G data
Rollingno contract
£12.00a month
No upfront costNo mid-contract price riseBuy now
at giffgaffDeal details
- 5G
- No contract
giffgaff SIM Only on goodybag 25GB with Unlimited mins & texts; 25GB of 5G data. £12 Topup
25 GBof 5G data
Rollingno contract
£12.00a month
No upfront costNo mid-contract price riseBuy now
at giffgaffDeal details
- 5G
- No contract
giffgaff SIM Only on 50GB (18 Month contract) with Unlimited mins & texts; 50GB of 5G data. £12 a month
50 GBof 5G data
18 monthscontract
£12.00a month
No upfront costNo mid-contract price riseBuy now
at giffgaffDeal details
- 5G
Black Friday
giffgaff 200GB SIM, £12/mo, 18-month contract (Black Friday: 50GB + 150GB extra)
200 GBof 5G data
18 monthscontract
£12.00a month
No upfront costNo mid-contract price riseBuy now
at giffgaffDeal details
giffgaff SIM Only on goodybag 30GB with Unlimited mins & texts; 30GB of 5G data. £15 Topup
30 GBof 5G data
Rollingno contract
£15.00a month
No upfront costNo mid-contract price riseBuy now
at giffgaffDeal details
- 5G
- No contract
giffgaff SIM Only on 100GB (18 Month contract) with Unlimited mins & texts; 100GB of 5G data. £15 a month
100 GBof 5G data
18 monthscontract
£15.00a month
No upfront costNo mid-contract price riseBuy now
at giffgaffDeal details
- 5G
giffgaff SIM Only on golden goodybag with Unlimited mins & texts; 50GB of 5G data. £15 Topup
50 GBof 5G data
Rollingno contract
£15.00a month
No upfront costNo mid-contract price riseBuy now
at giffgaffDeal details
- 5G
- No contract
giffgaff SIM Only on golden goodybag with Unlimited mins & texts; 100GB of 5G data. £20 Topup
100 GBof 5G data
Rollingno contract
£20.00a month
No upfront costNo mid-contract price riseBuy now
at giffgaffDeal details
- 5G
- No contract
giffgaff SIM Only on goodybag 80GB with Unlimited mins & texts; 80GB of 5G data. £20 Topup
80 GBof 5G data
Rollingno contract
£20.00a month
No upfront costNo mid-contract price riseBuy now
at giffgaffDeal details
- 5G
- No contract
giffgaff SIM Only on Pay Monthly 200GB (18 Month contract) with Unlimited mins & texts; 200GB of 5G data. £20 a month
200 GBof 5G data
18 monthscontract
£20.00a month
No upfront costNo mid-contract price riseBuy now
at giffgaffDeal details
- 5G
giffgaff SIM Only on 200GB (18 Month contract) with Unlimited mins & texts; 200GB of 5G data. £20 a month
200 GBof 5G data
18 monthscontract
£20.00a month
No upfront costNo mid-contract price riseBuy now
at giffgaffDeal details
- 5G
giffgaff SIM Only on Unlimited (18 Month contract) with Unlimited mins & texts; Unlimited 5G data. £25 a month
Unlimited5G data
18 monthscontract
£25.00a month
No upfront costNo mid-contract price riseBuy now
at giffgaffDeal details
- Unlimited data
- 5G
giffgaff SIM Only on goodybag 200GB with Unlimited mins & texts; 200GB of 5G data. £35 Topup
200 GBof 5G data
Rollingno contract
£35.00a month
No upfront costNo mid-contract price riseBuy now
at giffgaffDeal details
- 5G
- No contract
giffgaff SIM Only on golden goodybag with Unlimited mins & texts; Unlimited 5G data. £35 Topup
Unlimited5G data
Rollingno contract
£35.00a month
No upfront costNo mid-contract price riseBuy now
at giffgaffDeal details
- Unlimited data
- 5G
- No contract
Showing 23 of 23 deals
The cheapest giffgaff SIM only deal listed on SwitchSquid on 6 November 2026 is £6.00 a month for 2GB of data. We compare 23 giffgaff SIM only deals.
Why Choose Giffgaff SIM Only Deals?
Giffgaff is an MVNO, a mobile virtual network operator. It doesn't own its own masts; instead it runs on O2's infrastructure, giving you near-identical coverage at a fraction of the cost of a standard O2 contract. Because giffgaff keeps overheads low (no high street shops, no traditional call centre), those savings go straight into your monthly bill.
In the Ofcom 2025 service quality report, giffgaff scored 94% overall customer satisfaction, well above the industry average. It also won Mobile Network of the Year at the 2025 industry awards.
- Plans from £6/month: unlimited calls and texts included on every plan
- No contract required: all monthly rolling goodybags are one-month plans, cancel anytime
- No credit check: none on rolling monthly or Pay As You Go plans
- 5G at no extra cost: included on compatible devices without a price premium
- Earn payback rewards: refer friends, help in the community forum, earn cash or credit
Giffgaff SIM Only Plans at a Glance
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What Makes Giffgaff Different
1
No Credit Check
Giffgaff runs no credit check on any rolling monthly or PAYG plan, one of the best SIM options if you want to avoid hard searches on your credit file.
2
No Long Contract
Every standard goodybag is a 30-day rolling plan. Cancel, change, or upgrade any time, no exit fees, no awkward calls to your old provider.
3
5G Free on All Plans
5G is included at no extra cost on every giffgaff goodybag. You get O2's 5G network in hundreds of UK towns and cities, just need a compatible handset.
4
Payback Rewards
Refer friends, help others in the giffgaff community forum, and earn payback points: convert to cash, top-up credit, or donate to charity.
Giffgaff Network Coverage: Is It Good Enough?
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Which Giffgaff Plan Is Right for You?
Not sure how much data you need? Here is a quick guide based on typical monthly usage:
- Light user (under 5GB): Social media, WhatsApp, emails, and maps off Wi-Fi. A 2GB or 5GB goodybag covers most light users comfortably.
- Moderate user (5 to 15GB): Regular streaming of YouTube or Spotify on the go, video calls, some app downloads. The 15GB plan is a solid middle ground.
- Heavy user (15 to 50GB): You use your phone as a hotspot, stream HD video daily, or work remotely on mobile data. The 50GB plan gives headroom without paying unlimited prices.
- Power user (Unlimited): You work from your phone, travel frequently, or stream everything. The unlimited plan removes all data anxiety for one flat monthly fee.
The beauty of giffgaff is you're never locked in. If you take the 15GB plan and find you're running short, you can start a bigger goodybag next month, or even before your current one ends.
How to Get a Giffgaff SIM Only Deal: 4 Simple Steps
The whole process takes under 10 minutes
1
Compare Plans on Switch
Use Switch's comparison tool to filter giffgaff SIM only deals by data, price, and contract length. See every available goodybag side by side.
2
Order Your Free SIM
Giffgaff posts a free triple SIM (fits standard, micro, and nano slots) to your address in 2 to 3 working days. Alternatively, activate an eSIM instantly if your phone supports it.
3
Activate and Choose Your Goodybag
Go to giffgaff.com/activate, enter your code, choose your goodybag, and you are live. The whole process takes under 10 minutes from start to connected.
4
Keep Your Number (Optional)
Text PAC to 65075 for free to get your porting code from your old network. Give it to giffgaff and your number transfers within one working day, automatically.
Giffgaff Roaming: Using Your SIM Abroad
Giffgaff lets you use your plan allowance in the EU and a number of selected countries at no extra cost. Up to 5GB of your monthly data is available abroad. Once you exceed 5GB, data is charged at 10p per MB, so monitor usage if you're travelling for longer periods.
Outside the EU, you'll need credit to use data roaming. Calls and texts abroad are charged at standard rates. Always check giffgaff's roaming page before travelling to a non-EU destination.
eSIM and Wi-Fi Calling on Giffgaff
Giffgaff fully supports eSIM. If your phone has a built-in digital SIM slot (most phones from 2019 onwards), you can activate your plan instantly without waiting for a physical SIM in the post. Ideal if you're switching last minute or travelling.
Wi-Fi Calling (VoLTE) is also available on giffgaff, so you can make calls and send texts over a Wi-Fi connection when mobile signal is weak. If you live in an area with patchy indoor reception but a solid broadband connection, this makes a real practical difference.
Common Questions Before You Switch
1
Do I Need to Unlock My Phone?
Yes, your handset must be unlocked to use a giffgaff SIM. Most phones bought recently from UK retailers are already unlocked. If not, your current network must unlock it for free by law.
2
Can I Keep My Current Number?
Yes. Text PAC to 65075 (free) to get your porting code from your old network. Provide it to giffgaff during activation and your number transfers automatically within one working day.
3
What Exactly Is a Goodybag?
Giffgaff's term for its monthly bundles. Each goodybag is a 30-day rolling plan with a set data allowance plus unlimited UK calls and texts. You can auto-renew or start a new goodybag early if you run out of data.
4
Is There an 18-Month Option?
Yes, giffgaff offers 18-month SIM only contracts on certain plans, including unlimited data. Key advantage: giffgaff doesn't apply mid-contract price rises on 18-month deals, unlike most larger networks.
5
Is Giffgaff Good for Business Use?
Giffgaff is primarily aimed at personal users. For business mobile plans it's worth comparing dedicated business SIM options through Switch, where you can find plans with priority support, itemised billing, and VAT invoices that giffgaff doesn't offer.
Giffgaff vs Other Budget SIM Only Networks
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FAQs
Do I need to unlock my phone first?
If your phone was bought from a network other than O2, you may need to unlock it before using a giffgaff SIM. Contact your current network to unlock, it's usually free for phones that are out of contract. iPhones bought outright from Apple are always unlocked.
Can I keep my current phone number?
What is a Goodybag?
Can I get giffgaff on an 18-month contract?
Is giffgaff good for business use?
How much do giffgaff SIM only deals cost?
Does giffgaff do a credit check?
How fast is giffgaff 5G?
Can I use giffgaff in the EU?
How long does a giffgaff SIM take to arrive?
Can I change my giffgaff plan every month?
What happens to my giffgaff credit if I switch?
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