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Unlimited data SIM plan

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All of our unlimited bundles include

  • Unlimited data
  • Lasts for one calendar month
  • 5G and 4G speeds
  • No contracts or credit checks
  • Unlimited calls and texts
  • Powered by Vodafone
  • Roam like you're home in 36 European destinations
  • Up to 99% UK population coverage

How it works

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Order your SIM

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

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Activate it online

You can register your online account whilst your SIM arrives

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Transfer your number

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

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You're done!

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

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Go unlimited for less

£20.00

£10.00 Unlimited

Speed capped at 2 Mbps

Great for casual users

Using social media

Sending and receiving messages

Browsing the internet

£25.00

£12.50 Unlimited

Speed capped at 10 Mbps

Great for media consumers

Everything our £20 bundle can do, plus...

Streaming videos

Listening to music, podcasts and radio

Downloading and updating apps

£30.00

£15.00 Unlimited

No speed cap (up to 150 Mbps)

Great for online gamers & film lovers

Everything our £25 bundle can do, plus...

Streaming live HD video

Playing games online

Downloading large files

Tethering to your phone

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Double your data with our standard plans

Check out our other great value monthly bundles

Pair with the perfect phone

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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.

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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!

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.

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

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.

We offer unlimited data from £20 a month.

If you’re a new customer, simply order one of the SIMs above and you’ll get unlimited data! For existing customers, you can buy an unlimited bundle through My Account.

You can use your data, minutes, and texts as if you were in the UK in 36 European destinations. Outside of these locations, our rest of world charges apply.


All bundle customers have a 25GB data roaming limit regardless of the amount of data included in your bundle. Once you have 25GB 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 the 80% and 100% of the data limit.

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.

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).