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Giffgaff unlimited data sims

Giffgaff SIM only deals are available for 30-days or 18 months. Find the best Giffgaff SIM only deals for you.

Is a Giffgaff unlimited data SIM truly unlimited?

Giffgaff's unlimited goodybag gives you unlimited data for normal personal use, though a fair-use policy applies to tethering and the network may manage extreme usage.

For the vast majority of people who stream, browse and use maps freely, it removes any worry about running out of data.

Who should choose Giffgaff's unlimited data plan?

An unlimited SIM makes sense if you regularly stream video, game on the go, or use your phone as a hotspot and find capped bundles run out before the month does.

If you typically use only a few gigabytes, a smaller, cheaper goodybag will usually be better value.

Our top pick
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Unlimited speed

SIM Only Unlimited - 18 months

Data
Unlimited
(Unlimited speed included)
Allowances
Unlimited minutes
Unlimited texts
Contract
18 months
Total cost: £252
Price
£14per month
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Unlimited speed

golden goodybag - 0 months

Data
Unlimited
(Unlimited speed included)
Allowances
Unlimited minutes
Unlimited texts
Contract
No contract
Price
£20per month
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giffgaff's unlimited data goodybag removes any need to track your monthly usage at all, offering peace of mind for heavy data users on O2's network. As with any unlimited plan, it's worth being honest about whether you genuinely need it, since a smaller, capped goodybag with rollover could offer better value for lighter users.

1. Who benefits most from unlimited data

  • Heavy streamers, particularly those regularly watching video away from Wi-Fi.
  • Anyone using their phone as a mobile hotspot for a laptop or tablet.
  • Remote workers relying on mobile data for video calls or large uploads away from a fixed connection.

2. Who might be better off with a standard goodybag

If your usage is moderate and giffgaff's standard rollover goodybags comfortably cover your needs most months, a capped plan with data rollover may offer similar practical benefit for a lower price. Use our mobile data guide to estimate your typical usage before deciding.

3. Fair usage policies

Some unlimited plans, including giffgaff's, may apply a fair usage policy that can affect speed after an unusually high level of usage in a billing period. Check the current specific terms if you expect to use an exceptionally large amount of data each month.

4. giffgaff's flexible model still applies

Even with unlimited data, giffgaff's usual flexibility applies — you can typically switch back to a standard goodybag the following month if your needs change, without a fixed long-term commitment, unlike some providers' unlimited plans that require a longer contract.

5. Frequently asked questions

Does giffgaff's unlimited data goodybag have any usage limits?
Some unlimited plans include a fair usage policy that can affect speed after an unusually high level of usage — check the current terms for specifics.

Can I switch from unlimited to a standard goodybag later?
Generally yes, given giffgaff's flexible month-to-month model, making it easy to adjust if your data needs change.

Is unlimited data worth it if I mostly use Wi-Fi?
Probably not — if most of your usage happens over Wi-Fi at home or work, a smaller capped goodybag with rollover is likely to be better value.

Does giffgaff's unlimited plan use the same O2 network?
Yes, all giffgaff plans, including unlimited data options, run over O2's network.

6. Conclusion

giffgaff's unlimited data goodybag offers genuine peace of mind for heavy users, but its flexible, rollover-enabled standard goodybags may suit lighter users just as well for less money. Compare your realistic usage against both options before choosing.