ASDA Mobile SIM only deals: 100GB for £10, 25GB for £8
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We list the best of what's available on ASDA's SIM only this month, after comparing each plan with other UK mobile networks. Last updated: 18th February 2026.
ASDA's best SIM only deals
The best overall ASDA Mobile SIM only deal this month
just
£10
a month
✔ Unlimited mins and 100GB data See full deal
at mobile.asda.com
(opens in new window)
We think ASDA Mobile's best value option on SIM only this February is their discounted £16 £10 a month plan below, which comes with 100GB data, plus unlimited minutes and texts on a 12‑month deal:
That £6 monthly saving vs full price will save you £72 in total over the 12 months.
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. See the networks with cheaper plans 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 less monthly data, the next best SIM only plan on ASDA Mobile in our opinion is their discounted 12‑month one below. For £14 £8 a month, you get 25GB data, plus unlimited minutes and texts:
It’s a discount of £6 a month against the full price, adding up to a £72 saving over the 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). Here's which other networks can beat it:
Their £6 for 10GB plan is a decent deal for February
just
£6
a month
✔ Unlimited mins and 10GB data See full deal
at mobile.asda.com
(opens in new window)
If you need less data, another good deal on ASDA Mobile at the moment is their discounted £8 £6 SIM only plan here, which includes 10GB data instead, plus unlimited minutes and texts:
That discount will save you £2 a month, which adds up to £24 over the course of the 12‑month deal.
It's a good enough deal to get into ASDA's best SIMs but you can actually get a lower price for a similar plan elsewhere, even if you definitely want it to use the Vodafone network. See where you can get it for less here:
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How ASDA Mobile's deals compare with other networks
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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