Cookies on the SIM Sherpa website

We use cookies to track which pages on our website readers visit most. This helps us understand which topics people find interesting, to write more articles about them.

You can accept these tracking cookies or choose to block them. You can change these settings at any time.

X close

✖ Tracking cookies deleted and blocked

Ok, we will not track your page views as you move around any part of the SIM Sherpa website. But we will use that one cookie to remember you don't want to be tracked.

Click here to unblock tracking cookies

X close

✔ Cookies accepted

Thank you for accepting cookies for the SIM Sherpa website. This will help us constantly improve our content.

If you ever want to change your cookie settings for our website, go to our Cookies page here.

Various logos of UK mobile networks

SMARTY's unlimited data SIM only deal: now with a £25 Amazon voucher

SMARTY logo and SIM card

The retailers featured on this page may compensate us when our readers follow links to their websites and make a purchase. More

We look at the ins and outs of SMARTY's UK cheapest 1-month unlimited data SIM only plan, which now gets you a £25 Amazon.co.uk gift card. SIM Sherpa is your trusty guide. Last updated: May 14th 2019.

Hidden free month offer

Combine a free second month with a £25 Amazon voucher

One month free unlimited data

Get hidden offer

at SMARTY.co.uk
(opens in new window)

You can currently combine two offers on SMARTY's unlimited data plan to get £50 of value, from spending just £25, on a 1-month contract. Here's how:

SMARTY have a £25 Amazon gift card offer running on their unlimited data plan. When you order it by 12th June, they'll email you a free voucher to spend at Amazon.co.uk.

In addition, they have a hidden offer for our readers that gets you one month free on the unlimited data plan too. When you order via our hidden link below by 12th June, activate your SIM by 26th June and pay in full for your first month, you'll get your second month free.

None of the other links on this page get you the free month offer. You'll see a notification when you're redirected to SMARTY.co.uk confirming the offer has been applied. Full terms at SMARTY.co.uk

Useful link: Use this link to get the deal

What you get

SMARTY's unlimited data plan

Here's the deal this article's about:

Unlimited
minutes
+
Unlimited
texts
+
Unlimited
4G data
=
£25 a month
on a 1-month contract
(opens in new tab)

The benefits

It's unlimited data on a cheap 1-month contract

Leading pricing and no credit checkSee full details

at SMARTY.co.uk
(opens in new window)

The first thing to say about SMARTY's new unlimited data plan is that it's the cheapest of its type on a 1-month contract (you can actually get £24 a month on Three's 12-month contract here).

It gives you unlimited 4G data, which isn't subject to any speed restrictions or traffic management, which gives it an immediate edge over giffgaff's Always On SIM for the same price.

You can even use the SIM directly in a tablet or iPad to give you unlimited mobile broadband out and about.

Being on a 1-month deal is a real benefit too. If you decide you don't need so much data, you can switch plans month-to-month. Or if you're fed up with SMARTY completely, you can just stop buying the plan and leave.

And because you pay for SMARTY's plans up front with a registered credit or debit card, there's no credit checks you need to pass in order to get the deal.

Useful link: Read our full SMARTY network review

SMARTY are already a good network to join on any deal

SMARTY's network map

Make sure they have 4G/3G where you areCheck their signal

at SMARTY.co.uk
(opens in new window)

Before SMARTY came out with this unlimited data plan, we already rated them as a decent no-frill provider, with a great unique benefit. They pay you back for unused data (this doesn't work on the unlimited plan).

99% of the UK population can get their 4G where they live thanks to the Three network that SMARTY use. This doesn't count other places like roads, railway lines and countryside so test their signal everywhere you use your phone here.

We also expect customers on the SMARTY network to get 4G download speeds that average around the 20 Mbps mark, a speed that comfortably lets you stream all that unlimited video without buffering.

And if you're moving from another mobile network, you can bring your current mobile number with you. The process is dead easy and SMARTY have instructions on how to do it here.

Useful link: Order SMARTY's unlimited data plan

How SMARTY's deal compares

It's main rival is from SMARTY's parent network Three

Three logoThree's unlimited data SIM offer

Three's cheapest deal is on a 24-month contractSee Three's deal

at Three.co.uk
(opens in new window)

You can actually currently beat SMARTY's unlimited data deal for price, if you were willing to commit a longer 12 or 24-month SIM only contract.

Three's 12-month SIM is £3 a month cheaper:

It also comes with a few extra benefits you don't get on SMARTY, like inclusive roaming in these 71 countries (up to 19GB a month) and free upgrades on easyJet. You can use Three's SIM for tethering but not directly in a tablet though.

Save even more by committing to Three's new 24-month unlimited data plan:

SMARTY's deal works out slightly cheaper than Three's equivalent 1-month deal:

There's also Virgin Mobile's deal that comes in more expensive and is on a longer 12-month contract too. You also have to have Virgin Media broadband or TV at home to be able to buy it:

Or there's also giffgaff's Always On that does limit you to 2G speeds after 20GB usage but otherwise there are no caps on the number of gigabytes of data you can use:

So all things considered, SMARTY's is currently the cheapest 1‑month unlimited data deal. You could still save if you were willing to commit for a longer deal.

Useful link: Order SMARTY's unlimited data plan

Restrictions on SMARTY's unlimited data deal

The only real limitations are on roaming and tethering

SMARTY unlimited data free EU roaming

Use up to 19GB in the EU at no extra costAll roaming costs

at SMARTY.co.uk
(opens in new window)

Like practically every other mobile provider, SMARTY offers roaming at no extra cost in the EU.

On any of SMARTY's capped plans, you can normally use your entire data allowance abroad. But if you're on the unlimited plan, there's a limit of 19GB a month you can use (that's absolutely loads by the way).

The same applies for tethering in the UK. Normally you can use your whole allowance, on the unlimited data plan, it's 19GB too.

Other than that, as long as you're not using the SIM for commercial purposes yourself, or putting unusual amounts of traffic on the mobile network, you won't hit a data limit or be stopped by SMARTY.

Useful link: SMARTY's guide to tethering on their network

The deal

Unlimited
minutes
+
Unlimited
texts
+
Unlimited
4G data
=
£25 a month
on a 1-month contract
(opens in new tab)

SIM Sherpa can help you find your next SIM only deal

network logos