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Giffgaff SIM Only Deals

  • Save on a contract SIM Only deal on Giffgaff's Mobile network
  • Choice of great value plans
  • Flexible 1-month plans and longer 18-month contracts
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GiffGaff
GiffGaff SIM Deal Uses O2's network

1 month contract

unlimited minutes

unlimited texts

20GB

5G data

£10.00

a month

Double data
EU Roaming up to 5GB
GiffGaff
GiffGaff SIM Deal Uses O2's network

1 month contract

unlimited minutes

unlimited texts

2GB

5G data

£6.00

a month

EU Roaming up to 5GB
GiffGaff
GiffGaff SIM Deal Uses O2's network

No contract

unlimited minutes

unlimited texts

1GB

5G data

£6.00

a month

EU Roaming up to 5GB
GiffGaff
GiffGaff SIM Deal Uses O2's network

18 month contract

unlimited minutes

unlimited texts

6GB

5G data

£8.00

a month

EU Roaming up to 5GB
GiffGaff
GiffGaff SIM Deal Uses O2's network

1 month contract

unlimited minutes

unlimited texts

5GB

5G data

£8.00

a month

EU Roaming up to 5GB
GiffGaff
GiffGaff SIM Deal Uses O2's network

No contract

unlimited minutes

unlimited texts

4GB

5G data

£8.00

a month

EU Roaming up to 5GB
GiffGaff
GiffGaff SIM Deal Uses O2's network

18 month contract

unlimited minutes

unlimited texts

25GB

5G data

£10.00

a month

EU Roaming up to 5GB
GiffGaff
GiffGaff SIM Deal Uses O2's network

No contract

unlimited minutes

unlimited texts

15GB

5G data

£10.00

a month

EU Roaming up to 5GB
Mobile networks may increase prices in line with the consumer price index each year. Please check individual network's terms before purchasing.
  • Overview

Why choose Giffgaff SIM-only?

Giffgaff offers the same coverage as O2, which means there’s roughly 99% population coverage for 4G and rapidly growing 5G coverage.

So you’ll get a signal almost everywhere, and there’s a good chance you’ll be able to get fast 5G data.

Giffgaff also offers plans with unlimited data, so you don’t need to worry about running out if you’re a heavy user, and many of its SIM-only plans are short term, lasting just 30 days – so you’re not tied into a lengthy contract. On top of all that, Giffgaff is competitively priced, undercutting many other networks.

Plus, Giffgaff has won numerous awards over the years, including big ones like Uswitch Network of the Year and Uswitch best SIM Only Network, so you can be confident that you’re in safe hands.

Added extras

Giffgaff is focused on providing its services for the lowest price possible, so it’s highly affordable and excellent value, but to achieve that the network doesn’t offer many extras, since they’re not things that everyone would want anyway.

However, if you get people to sign up to Giffgaff or help out other users on the network’s community forums, you’ll receive points that can be converted to cash or credit or donated to charity.

Most plans also give you an extra 1GB of data to use if you run out, once you've bought at least three goodybags, so this rewards staying with the network. 

Data roaming

Giffgaff lets you use your allowances at no extra cost across most of Europe, which is no longer the case on all networks. There’s a fair usage limit of 5GB when data roaming.

Tethering

With Giffgaff you can tether as much as you want within your allowance, which means that on an unlimited data plan there are no limits to how much you can use to connect other devices (such as laptops and tablets) to the internet.

How can I keep my number when switching?

To keep your number you’ll need your PAC code from your old network, which you can get either by texting ‘PAC’ to 65075 from the number you want to keep, or by calling up your old network and asking for it.

Once you have it and have activated your new Giffgaff SIM card, just head to the network’s number transfer page and fill out the form. Your old number will then be transferred to your new Giffgaff SIM card on a day of your choice.

Which size SIM will I get?

Giffgaff will supply you with what it calls a ‘triple SIM.’ This contains all three possible SIM card sizes in one package, so just pop out the size you need and stick it in your phone. If you’re unsure which you need, just compare the available sizes to your old SIM card to find the right one.

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