Unlimited Data SIM only plans

Why you'll love our unlimited data SIM only deals

Great value unlimited data

Yep, that’s right. The days of running out of data are over! From just £20 a month.

One month, no commitments

With us, you’re not locked in to anything. Flexible mobile is here to stay.

Incredible coverage

Get up to 99% UK population coverage with Asda mobile.

Unlimited calls and texts

Stay connected with your friends and family, you know they’ll appreciate it.

Superfast 5G speeds

Access unparalleled speeds up to 150Mbps. Stream without interruption!

Powered by Vodafone

We’re proud to use Vodafone, the UK’s reliable, award-winning network.

How our unlimited data SIM only plan works

SIM card icon

1. Order your SIM

We'll dispatch your SIM first class the next working day

Checklist icon

2. Activate it online

You can register your online account whilst your SIM arrives

Transfer number icon

3. Transfer your number

Login to your online account and follow the step by step instructions

Check icon

4. You're done!

And that's it! You can now enjoy all the benefits of our network

unlimited data illustration

Why choose unlimited mobile data?

Say goodbye to running out of data. With an unlimited data SIM, you can use your phone throughout the month without worry.

With unlimited data, you can stream music and videos, work remotely, or browse the web without any restriction. Do everything you love whenever, wherever.

unlimited data illustration
5g illustration

Go superfast with unlimited 5G

With our unlimited data SIM you’ll get 5G coverage in 100 UK towns and cities! Take your connection to the next level with speeds up to 150Mbps!

All of our unlimited data SIMs come with 5G at no extra cost - enjoy a faster, smoother, more reliable 5G coverage today.

Find out more about our 5G SIM deals.

collection of mobile phone handsets

Pair with the perfect phone

Pair your unlimited data SIM with a brand new handset!

Whether you’re after a cutting-edge smartphone or like to keep things simple, you can find the perfect device with us.

Simply add an unlimited SIM at the checkout once you've chosen a handset.

collection of mobile phone handsets

Frequently asked questions

Unlimited data is exactly what it sounds like. You won’t have a cap on how much you download or upload in a month, so you can use your data as much as you want without worrying!

We offer unlimited data plans for as low as £20 per month, which is suitable for casual users. However, if you consume a lot of media, you may want to opt for the unlimited speedy for £22 per month. This unlimited data plan is perfect for streaming HD video, listening to music and podcasts. For gamers and film lovers who require high-speed internet for their gaming and streaming needs, we recommend the Unlimited Superfast plan at £24 per month as it offers even faster speeds, is perfect for online gaming and includes everything the Unlimited Speedy bundle offers.

If you’re a new customer, simply choose one of our unlimited data plans to suit your lifestyle and budget and follow the purchasing instructions. For existing customers, you can buy an unlimited mobile data bundle through My Account.

You can use your data, minutes, and texts as if you were in the UK in 37 European destinations. Outside of these locations, our rest of world charges apply.

All bundle customers have a 5GB data roaming limit regardless of the amount of data included in your bundle. Once you have used 5GB of data you will be charged 4p per MB, the same as you would pay for data in the UK. You will receive notifications when you reach 80% and 100% of the data limit.

When we say unlimited, we mean unlimited! As long as you are using your bundle within the UK (excluding Isle of Man and the Channel Islands), you’ll be fine.

The only time a fair usage limit applies is when you’re roaming. Please see FAQ “Can I use my unlimited data plan abroad?” for more details.

Yes, all of our bundles include 4G as standard. We offer our customers 4G speeds up to 60Mbps for downloads and up to 30Mbps for uploads.

Yes you can! The 5G speeds you can get depends on which unlimited SIM plan you’re on:

Bundle price Speed cap (using 5G)
£20 2Mbps
£25 10Mbps
£30 150Mbps

Yes, you could use your unlimited bundle as a replacement for cabled broadband, assuming your mobile signal is strong enough. You could use your Asda mobile phone as a personal hotspot (if your device allows this), letting you access the internet on another device (such as a laptop) using your Asda mobile data. To set up a personal hotspot, check your handset’s manual.

Alternatively, you could use your unlimited bundle SIM with a mobile broadband router or Wi-Fi dongle (assuming these devices are not locked to another network).

Yes! There’s no cap on the amount of data you can use while tethering to your Asda SIM.

A speed cap limits how quickly you can download or upload data. We offer three different speed caps depending on which unlimited bundle you choose.

Bundle price Speed cap (using 5G)
£20 2Mbps
£25 10Mbps
£30 150Mbps

Find out more about our speed caps.

Of course! All you need to do is make sure that your phone is unlocked, so that it’s compatible with an Asda mobile SIM. Find out more about unlocking phones.

You sure can. You can always bring your number with you when switching networks. To start, you need to request a PAC code from your current provider. The simplest way to do this is by texting ‘PAC’ to 65075 (free of charge) off your old SIM card. Once you have this code (which is valid for 30 days), you can let us know you want to transfer your number through your Asda mobile online account.

All of our bundles last for one calendar month.

Yep! You can set your bundles to automatically renew each month through your online account.

Asda Stores Limited (registered address: Great Wilson Street, Leeds, LS11 5AD) trading as Asda Money, acts as a credit broker not a lender, and is authorised and regulated by the Financial Conduct Authority. Asda Stores Limited only offers finance from a restricted range of finance providers. Finance provided by PayPal Credit. Terms and conditions apply. Credit subject to status, UK residents only. ASDA Stores Limited acts as a broker and offers finance from a restricted range of finance providers. PayPal Credit is a trading name of PayPal (Europe) S.à r.l. et Cie, S.C.A. 22-24 Boulevard Royal L-2449 Luxembourg.