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Our 2018 giffgaff network review: coverage, 4G speeds and deals rated

giffgaff SIM card

*when you order via this page

Thinking about joining giffgaff on SIM only or phone contract? Our network review looks at the pros and cons: mobile coverage, 4G speeds, deals and service. SIM Sherpa is your trusty guide. Last updated: 2nd March 2017

giffgaff review

Covered in this review:


Free credit offer and cheap deals
Good coverage and 4G speeds
Flexible SIM only deals with no contract
Decent range of unlocked smartphones
Plan offering close to unlimited data

Skip to: giffgaff benefits


No phone-based customer service
Phone deals based on personal finance
Speed limits on highest data tariff
Expensive roaming

Skip to: giffgaff disadvantages

Summary and more info

Our conclusion and verdict
Bringing your number to giffgaff
Delivery and returns

Skip to: Our giffgaff rating


1) You’ll get £5 free credit if you order via our invite page

Free credit on giffgaff

Get £5 extra credit free when you top up £10

First things first: if you’re thinking of joining giffgaff on a SIM only deal, make sure you order your giffgaff SIM through our page here so that you get £5 free credit.

We’ll take you to a special page on giffgaff’s official website to request your free SIM.

Once they’ve delivered it, you’ll need to top up with at least £10 to get the bonus credit or buy one of giffgaff’s goodybag bundles for £10 or more. But once you’ve done that, £5 extra will automatically be applied to your account.

So if you decide giffgaff is right for you, remember SIM Sherpa can get you free credit!

Deals, perks and pricing: ★★★★☆ (4)
Useful link: Order free giffgaff SIM with £5 free credit

2) You’ll get the same coverage as on O2, plus 4G speeds at no extra cost

giffgaff 4G/3G coverage checker

O2 coverage, giffgaff prices

It’s no secret that giffgaff use O2’s mobile network to bring their customers signal but what does that actually mean?

In terms of coverage, you’ll get identical reception to someone who was on O2 directly. So if you’re moving from O2 themselves or another network that uses them, like Tesco Mobile, there’s no good reason you won’t get the same number of bars in the places you use your phone.

Speed-wise the O2 network isn’t the very fastest (that title belongs to EE) but we'd say you could still expect downloads at around 16 Mbps over 4G if giffgaff can match O2 directly.

That’s easily enough to easily support smooth video or audio streaming and lightning-fast internet browsing.

Network coverage: ★★★★☆ (4) | 4G speeds: ★★★☆☆ (3)
Useful link: Check your giffgaff coverage

3) Choose either to pay as you go or buy a monthly bundle

giffgaff SIM only deals

giffgaff's monthly bundles start from £5

Technically speaking, giffgaff are a Pay As You Go only provider. But if you’re used to Pay Monthly, don’t let that put you off, because they have options that are just as good as contracts.

Their ‘goodybag’ bundles give you a set number of minutes, texts and data to use each month for a fixed cost (just like a pay monthly deal). Each goodybag lasts for 30 days.

You can either choose to top up with credit and select a goodybag manually each month. Or choose your favourite and set it to renew automatically every 30 days. You can always stop or change again later.

If you know you hardly use your phone giffgaff are a good choice too, because you choose just top up with some credit and then pay per minute, text or MB data you use, and only when you use it (see latest costs here).

Flexibility: ★★★★★ (5) | Deals, perks and pricing: ★★★★☆ (4)
Useful link: See giffgaff's SIM only bundles (and get £5 free credit)

4) No contracts means no credit checks on SIM only

No contracts on giffgaff

Everybody's welcome on giffgaff

As we’ve mentioned above, all giffgaff’s monthly bundles are paid for up front (either out of credit you’ve topped with or automatically via direct debit). This brings one key benefit:

There’s no credit check to pass when you join giffgaff on SIM only. That means anyone can join giffgaff, as long as you have a UK bank account and address.

So even if you’re under 18, have only just moved to the UK or have bad credit history, everyone is guaranteed to be accepted for a giffgaff SIM.

Note: if you want to take a deal for a phone handset with giffgaff there is a credit check required (see negatives section on phone deals further down the review).

Flexibility: ★★★★★ (5)
Useful link: Compare all no credit check SIM only deals in our guide.

5) No contracts means you have freedom to do what you like

giffgaff flexibility

We rate giffgaff highly for flexibility

Because you decide if you want to buy a monthly bundle in advance and when to top up, giffgaff give you a level of freedom you don’t get with other contract-based providers.

You can change to a different goodybag bundle each month. So, for example if you find you need more data than your current bundle gives you, you can move up to one that gives more.

Or if you’re ending up with leftover minutes or data, you can move down to a cheaper bundle that gives you less. giffgaff will even actively tell you if you'd be better off on a cheaper plan!

And if you decide you want to leave giffgaff or take a break from buying monthly bundles, you can do that too. Just cancel any automatic renewal and spend any credit you’ve got leftover.

Flexibility: ★★★★★ (5)
Useful link: Read giffgaff's About Us page to learn what makes them tick

6) All phones on giffgaff come unlocked

giffgaff's phone range

A decent range of the latest smartphones

giffgaff have a good range of well-priced smartphones from the usual manufacturers you'd expect including Apple iPhone, Samsung Galaxy, Sony Xperia, Microsoft, HTC and more (see full range here).

On most models (around £100 value and above), you can choose to either buy the phone outright or spread the cost of it over 6, 12 or 24 months. This is done on finance, which does have its own downsides.

The key benefit with all giffgaff's phones is despite being sold with a SIM only plan attached, you don't have to stick with giffgaff as your mobile provider.

You're free to put any SIM from any other network in the phone and it will work just fine.

This is a bold move from giffgaff and underlines how they're arguably the most flexible network currently.

Phone range: ★★★★☆ (4)
Useful link: See giffgaff's phone range on their official site

7) There's an unlimited data option. Sort of...

giffgaff Always On SIM only plan

No data limit to exceed with "Always On"

The number of networks offering unlimited data SIM only plans has dwindled since the advent of fast 4G and our expanding appetite for getting through more and more data (which costs them to supply).

Many people just want unlimited data because they don't like the thought of going over a limit and being charged for extra usage. That's where giffgaff's 'Always On' plan comes in:

With Always On there's no fixed limit on the number of gigabytes of data you can use in a month, so you'll never have to pay for more.

If you're interested in unlimited data because you know you're a heavy data user, there is a downside that we go into in our negatives section further down the page.

Deals, perks and pricing: ★★★★☆ (4)
Useful link: We compare Three's All-You-Can-Eat data with giffgaff's Always On in a quick guide.


1) There's no customer service over the telephone on giffgaff

giffgaff online customer service

There's no-one to phone if things go wrong

One of the ways that giffgaff keeps its costs down is by cutting out call centres, which other networks would normally have for dealing with customer service enquiries.

Instead, all giffgaff’s support is based online, either through various help articles on their website or provided through their online community section, which is essentially a forum, staffed by other giffgaff customers, who earn free credit by helping others.

This could lead to frustrating waits to get issues resolved. If want the re-assurance of good UK-based customer service, you might better off looking at someone like Plusnet Mobile.

Customer service: ★★☆☆☆ (2)
Useful link: See help topic examples in giffgaff's help forum.

2) giffgaff's phone contracts are based on loans

giffgaff phone loans

Harder to get accepted for a phone with giffgaff than other networks?

Traditional mobile contracts combine the cost of your phone and airtime tariff (your minutes, texts and data) into one monthly cost. Within that price, a mobile network will make profit on the phone and your usage.

When you take a phone on Pay Monthly with giffgaff, you're essentially taking out a loan with them for the value of the model you pick. You then pay that back each month and that's your monthly cost.

This sounds fine but as soon as you turn getting a mobile phone into a financial product, there's a lot more regulation that giffgaff will have to adhere to in order to prove they are lending money responsibly. Just like a bank does with mortgages or personal loans.

What does that mean? giffgaff's credit checks may be more stringent than networks that offer traditional mobile phone contracts, so you may find it harder to be accepted.

Useful link: Read how giffgaff's phone financing works in their own guide.

3) Always On data is hampered by a speed limit at peak times

giffgaff Always On restrictions

2G speeds once you've used up 6GB data

While 'Always On' features in our positives section because it means you'll never have to pay for more data, as you can't ever run out, there is one snag that puts it in our negative section too:

Each month, you can only actually use 6GB data at the full best-possible 4G speeds giffgaff deliver.

Once you've used that, your speed will be reduced to a mere 256 Kbps (around 2G speed) during the hours of 08:00 - 23:59. This is basically the whole day.

The reasoning behind this is that Always On is not technically an unlimited data product and giffgaff will want to keep their network clear for other users. Instead it's there for people who want to know they can't ever be charged extra for data.

Useful link: Read giffgaff's own Always On explanation

4) Roaming can be expensive on giffgaff

giffgaff roaming charges

No inclusive roaming on giffgaff

While giffgaff are set up to be a very cheap provider for when you're at home in the UK, they don't yet offer any inclusive roaming abroad like other networks are starting to.

That means if you go abroad, you'll pay per minute, text and MB data at varying rates (inside the EU is cheaper than the rest of the world, see all giffgaff roaming costs here).

If you're after a deal that gives you inclusive roaming, we recommend Three's Feel-At-Home that gives lets you use your regular UK minutes, texts and data in 42 other countries.

Useful link: Learn about Three's Feel At Home and starting prices at

Conclusion and useful info

Our overall rating for giffgaff ★★★★☆ (4/5)

giffgaff logo

Overall, SIM Sherpa gives giffgaff mobile network a rating of 4 stars so far in 2018 .

This cheap and cheerful network gives you low-cost bundles and Pay As You Go rates, plus un-rivalled flexibility backed up by decent coverage and 4G speeds through O2's network.

Here's how our overall rating breaks down:

Flexibility - 5/5

★★★★★ SIM only plans you can change each month or leave with no notice, plus unlocked phones on contract lengths you get to choose, giffgaff's best score comes for flexibility. We're not sure any other network beats them for it.

Deals, perks and pricing - 4/5

★★★★☆ giffgaff's deals are cheap for the amount of minutes and data they give you and you can get £5 free credit by ordering your giffgaff SIM via our page here. The only things that stop us giving giffgaff a 5-star rating are the lack of truly unlimited data and their expensive roaming.

Phone range - 4/5

★★★★☆ There's a phone for practically everyone's needs in giffgaff's range, from cheap and cheerful Android to the latest iPhone and Samsung Galaxy models. See phones on giffgaff >

Network coverage - 4/5

★★★★☆ When it comes to getting a signal to make calls or use the internet on your phone, giffgaff running on O2's network gives you a safe pair of hands. Check your giffgaff coverage >

4G speeds - 3/5

★★★☆☆ Room for improvement here with giffgaff using O2's network, which is typically seen as the slowest of the major networks. Check 4G and 3G on giffgaff near you >

Customer service - 2/5

★★☆☆☆ The trade off for cheap deals with giffgaff is their online-only customer service. Not being able to call someone when you've got a problem is bound to irritate some people, no matter how efficient giffgaff's online community of helpers are.

Other useful information about giffgaff

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