ASDA Mobile's best SIM only deals: 3GB for £5, 10GB for £8
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Have a look at the plans on ASDA's SIM only that we rate best this month. We've compared prices against every other network. Last updated: 2nd October 2025.
ASDA's best SIM only deals
This month's best SIM only deal on ASDA Mobile
just
£5
a month
✔ Unlimited mins and 3GB data See full deal
at mobile.asda.com
(opens in new window)
Out of all the SIM only plans available this October on ASDA Mobile, we'd say their best value deal is their discounted 1‑month SIM below, which gets you 3GB data, plus unlimited minutes and texts for £5 a month:
It might be one of ASDA's best deals on SIM only but you can get a lower price for a similar plan on other providers, even ones that use the Vodafone network. See which networks that are cheaper here:
ASDA are also offering 10GB for £8 on SIM only
just
£8
a month
✔ Unlimited mins and 10GB data See full deal
at mobile.asda.com
(opens in new window)
To get more data, another good deal on ASDA Mobile at the moment is their discounted £8 SIM only plan here, which includes 10GB data instead, plus unlimited minutes and texts:
This is good for ASDA but it's not an unbeatable price. You can get similar SIM only plans for less with some other providers, even ones that also use the Vodafone network. Here's where else you can get a lower price:
They've also got a 15GB for £10 SIM plan at the moment
just
£10
a month
✔ Unlimited mins and 15GB data See full deal
at mobile.asda.com
(opens in new window)
For people who need even more data, our next best pick of ASDA Mobile SIM only plans is their discounted 1‑month £10 deal below, which gets you 15GB data and unlimited minutes and texts:
It's a good deal by ASDA's standards but price-wise you can still beat this plan on other providers (even ones that still use 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