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Keep your phone. Save money. Switch to SIM Only with Olimit and start saving today.

Compare the best SIM Only deals now and see how much you could reduce your monthly bill.

Use our filters to find the perfect plan — adjust data, contract length, and price to match your needs and budget.
Need help deciding? Explore our guide to getting a UK SIM card and see how SIM Only compares to a phone contract.

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How do I switch SIM only deal and keep my number?

1. Choose your new SIM Only deal
Compare the best SIM Only plans from top UK mobile networks. Once you find a deal that fits your needs, click through to the provider’s website to place your order.

2. Get your PAC code to keep your number
Want to keep your existing mobile number when switching networks? Text PAC to 65075 to get your code instantly — it’s quick, free, and works on all major UK networks.

3. Transfer your number to your new SIM Only plan
After signing up for your new SIM Only deal, give your PAC code to your new network. This will begin the number transfer process and automatically cancel your old contract. In most cases, you can enter your PAC code during checkout when switching SIM Only deals online.

Why is my SIM Only contract price increasing?

SIM Only plans often go up in price once a year — usually around March or April. These mid-contract price hikes used to follow the Consumer Price Index (CPI), but Ofcom now requires mobile networks to clearly state any increases in pounds and pence in your contract.

Not happy with the change?
Check when your current contract ends and set a reminder to switch. If you’re unsure about your status, text ‘INFO’ to 85075 — this free service will tell you whether you’re still in contract and if you can switch providers without paying an early exit fee.

Ready to switch?
Compare the best SIM Only deals at Olimit and take back control of your mobile bill.

Three Sim Only

Promoted

eSIM

Available

120GB

of 4G/5G data

£12

until April 2026

Price rises every April in contract by £2.30

12 Month Contract

Asda Mobile SIM Only Plans: Flexible & Affordable UK Mobile Deals

Looking for a SIM-only plan in the UK that combines affordability, flexibility, and reliable coverage? Asda Mobile offers a range of SIM-only plans on the Vodafone network, perfect for browsing, streaming, gaming, and staying connected. With no long-term commitments, Asda Mobile lets you choose a plan that fits your usage and lifestyle. Plans also include roaming to 46 destinations with a 5GB cap, ideal for occasional international travel.

Why Choose Asda Mobile SIM Only?

Flexible Plans: 30-day rolling SIMs allow you to change or cancel anytime without penalties.
Vodafone Network Coverage: Enjoy extensive 4G and 5G coverage across the UK for reliable signal and data speeds.
Affordable Options: Budget-friendly plans for light users and generous data allowances for heavy users.
No Credit Checks: Ideal for users with varied credit histories.
Data Rollover: Unused data rolls over to the next month, so you never lose what you pay for.
International Roaming: Use your allowance in 46 destinations with a 5GB cap for travel convenience.
eSIM Compatible: Activate your SIM digitally without a physical card.

Key Features of Asda Mobile SIM Only Plans

Flexible 30-day rolling plans with no long-term contract.
Variety of data allowances, including options suitable for heavy users.
Unlimited UK calls and texts included in most plans.
Vodafone network ensures fast and reliable 4G/5G connectivity across the UK.
Data rollover allows you to carry unused data forward.
eSIM activation and mobile hotspot support for digital-first users.
International roaming to 46 destinations with a 5GB cap.
Transparent billing and no hidden fees.

Frequently Asked Questions About Asda Mobile SIM Only

Q: Can I keep my number when switching to Asda Mobile?
A: Yes, request a PAC code from your current provider to transfer your number quickly and seamlessly.

Q: Are Asda Mobile SIM plans no-contract?
A: Yes, most plans are 30-day rolling, giving you flexibility and freedom from long-term commitments.

Q: Can I share my Asda Mobile data with other devices?
A: Yes, mobile hotspot and tethering are supported on most plans.

Q: Are Asda Mobile SIMs compatible with 5G?
A: Yes, all SIMs support 5G on Vodafone’s network where coverage is available.

Q: Can I use my Asda Mobile SIM abroad?
A: Yes, roaming is available to 46 destinations with a 5GB cap included in your plan.

Q: How do I manage my Asda Mobile plan?
A: Easily manage your account, top up, and track usage via the Asda Mobile app or website.

Q: Does Asda Mobile offer unlimited data SIM plans?
A: Yes, some plans provide unlimited data for streaming, browsing, and gaming without worrying about overage.

How to Choose the Right Asda Mobile SIM Only Plan

Consider your monthly data usage to select the right allowance or unlimited plan.
Opt for 30-day rolling plans for maximum flexibility.
Check additional features like data rollover, hotspot, and international roaming allowances.
Compare Asda Mobile with other UK SIM providers to ensure the best value for your needs.

🔁 Compare Other UK SIM-Only Plans

If Asda Mobile isn’t quite right for you, explore other popular UK SIM-only providers:

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We partner with trusted networks—both the household names and rising stars—so you can compare better deals, smarter options, and hidden gems all in one place.

If Asda Mobile isn’t the right fit for you, there are plenty of other UK networks offering a wide variety of plans. Whether you're looking for something budget-friendly, need loads of data, or have specific handset preferences, there’s a perfect deal out here for you.

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Asda Mobile SIM Only Plans: Flexible & Affordable UK Mobile Deals

Why Choose Asda Mobile SIM Only?

Key Features of Asda Mobile SIM Only Plans

Frequently Asked Questions About Asda Mobile SIM Only

How to Choose the Right Asda Mobile SIM Only Plan

🔁 Compare Other UK SIM-Only Plans

Other Networks

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Networks Using:

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Asda Mobile SIM Only Plans: Flexible & Affordable UK Mobile Deals

Why Choose Asda Mobile SIM Only?

Key Features of Asda Mobile SIM Only Plans

Frequently Asked Questions About Asda Mobile SIM Only

How to Choose the Right Asda Mobile SIM Only Plan

🔁 Compare Other UK SIM-Only Plans

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