Compare ASDA Mobile SIMs: 100GB for £10, 25GB for £8
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We compare the whole SIM only range on ASDA to find the ones that come out best in price comparisons with other networks. Last updated: 17th April 2026.
ASDA's best SIM only deals
This month's overall best ASDA Mobile SIM only deal
just
£10
a month
✔ Unlimited mins and 100GB data See full deal
at mobile.asda.com
(opens in new window)
Out of all ASDA Mobile's SIM only plans they've got running this April, our current best pick would be their discounted £16 £10 one below. It's on a 12‑month deal, gets you 100GB data, plus unlimited minutes and texts as well:
Getting £6 off a month means you’ll save £72 over the course of your 12‑month deal.
It's definitely one of ASDA's best. But it's not market-leading. You can get a similar plan on other providers for less, even if you need your SIM to use the Vodafone network. See which networks that are cheaper here:
ASDA's 25GB for £8 plan is a good option too
just
£8
a month
✔ Unlimited mins and 25GB data See full deal
at mobile.asda.com
(opens in new window)
For those with smaller data needs, have a look at ASDA Mobile's discounted 25GB SIM below at £14 £8 a month, as it's another good deal. It's on a 12‑month plan and comes with 25GB data, unlimited minutes and texts:
With £6 off per month, the total saving over the deal’s 12 months adds up to £72.
Even though it's in our pick of ASDA's best SIM only deals, you can actually beat it on price with other providers, including ones that also use the Vodafone network. Here's where else you can get a lower price:
Their £6 for 10GB plan is a decent deal for April
just
£6
a month
✔ Unlimited mins and 10GB data See full deal
at mobile.asda.com
(opens in new window)
If that's more data than you need, another option for you on ASDA is their discounted 12‑month SIM below, which costs £8 £6 a month for 10GB data and comes with unlimited minutes and texts:
You’ll save £24 in total when you add up that £2 monthly saving over the deal’s 12 months.
While this is a good enough deal to make it into the best of ASDA's SIMs, you can beat it for price (even if you definitely want a provider that uses the Vodafone network). See who's offering it for less here:
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How ASDA compare for SIM only prices and benefits
In our review of ASDA Mobile, we said we liked the fact that ASDA share the same coverage and 4G speeds as their hosts Vodafone (5G is capped on their unlimited plans) as well as having WiFi calling and 4G calling.
They sell all of their SIM only plans as monthly bundles of mins, texts and data. This can be set to auto-renew every month. That lets you switch plans each month without being stuck on a contract.
In terms of price, they’re generally one of the cheapest providers, as well as having some of the most competitive small data plans of all providers on the Vodafone network.
ASDA still include inclusive roaming in these 36 EU destinations. Their low-cost data add-ons and extra parental controls also make them great for putting your kids onto a new plan.
Useful link: Read our full ASDA Mobile review
Good things to know about ASDA’S SIM only plans
Your ASDA SIM will arrive between 2-3 working days after ordering. Your SIM package will contain every size of SIM to fit into any phone. ASDA don’t offer eSIMs (here are all the networks that do).
It’s your right as a customer to get a refund for anything you buy online. So if you’re not satisfied with your ASDA SIM you can return it within 14 days to get a full refund. Here’s how you can do it.
Since you’re paying for everything up front with ASDA, you won’t have to pass a credit check for your SIM. All you have to do is set up an account with your details so they know who you are.
To switch from your old network to ASDA while keeping your number, you’ll need to request a PAC from your old provider and give it to ASDA whenever. For more details follow their instructions here.
Useful link: Compare all ASDA Mobile SIMs