What are O2 prepaid plans?

Want all the benefits of O2 without being tied down? O2’s top SIM-only plans are the answer! Stick with us and learn about the best prepaid plans, so you can call, text, and browse your way.

Summary

If you’re looking to keep things simple and love the freedom of Pay As You Go (PAYG), O2’s SIM-only prepaid plans are a great choice. This guide will walk you through O2’s value-packed ‘Big Bundles’, explain the options available, and help you pick the right plan for your needs. Whether you’ve finished up a contract, want to switch providers, or need to stick to a budget, we’ll show you how to choose and manage the ideal plan each month.

What You’ll Learn

What O2 SIM-only plans are and how they work.
How to compare O2 prepaid plans and choose the right one.
Simple steps to activate, top up and manage your O2 plan.
The benefits of opting for an O2 SIM-only plan.
FAQs about O2 prepaid plans

What are O2 SIM-Only Plans?

O2 Big Bundles (also known as O2 SIM-only plans) are a flexible way to keep in control of your spending and mobile usage. Pick the bundle that suits you best, pay upfront and enjoy! There are no contracts, credit checks, or long-term commitments involved, so you’re never tied in.Each bundle lasts for 30 days – after that, you’ll need to top up your balance to buy the next one. You can also switch up or pause your plan each month, making it ideal for anyone who wants a low-risk, mobile plan. Whether you’re new to O2, changing providers, visiting the UK, or are looking to manage your monthly spend, there’s a Big Bundle that’s perfect for you.

How Do O2 SIM-Only Plans Work?

If you’re thinking of switching to an O2 SIM-only plan, you’ll be pleased to know that they’re simple and straightforward. Each 30-day bundle requires upfront payment, which then gives you unlimited calls and texts, along with a set amount of data.Everything is managed via the My O2 app or over on O2’s website: from checking your usage and remaining data, to adding top-ups and switching up your bundle. Just make sure you have enough credit on your balance each month to activate your chosen bundle. This keeps things easy, hassle-free, and ensures you’re always connected.Need to top up your O2 phone? Check out our variety of O2 e-vouchers, which start at just £10 and go up to £50. Once you’ve placed your order, your top-up will appear on-screen and will be sent straight to your email for safekeeping.

Comparison of O2 Big Bundle (SIM-Only) Plans

Looking to switch to a SIM-only plan and wondering what O2 could offer? Their 30-day Big Bundle plans could be just what you’re after – flexible and affordable with no contract. We’ve rounded up their SIM-only options in the table below to help you compare plans and find the right one for you.

Monthly Price	Data Allowance	Minutes & Texts	Key Features
£10	8 GB	Unlimited UK minutes & texts	Data rollover available.EU roaming coveredMost affordable plan
£15	25 GB	Unlimited UK minutes & texts	Data rollover available.EU roaming coveredIncludes 50 international minutes across 42 countries.
£20	40 GB	Unlimited UK minutes & texts	Data rollover available.EU roaming covered (up to 25GB)Includes 50 international minutes across 42 countries.
£30	125 GB	Unlimited UK minutes & texts	Data rollover available.EU roaming covered (up to 25GB)Includes 250 international minutes across 42 countries.Top-tier Big Bundle with major data allowance.

How To Choose An O2 Big Bundle That Suits Your Needs

O2 knows everyone uses their phone differently, and there’s no one-size-fits-all when it comes to SIM-only plans. Whether you’re a social scroller, an avid gamer, or browse the web on occasion, you’ll find your ideal match below!

User Type	Recommended Plan	Why It Works
Light User	£10 / 8 GB	If you’re someone who mainly texts, calls and browses the web occasionally using your phone, this is the SIM-only plan for you.
Everyday Browser & Social Scroller	£15 / 25 GB	This one’s a good choice for those who regularly browse social media, enjoy moderate streaming, and keep in touch with friends and family.
Streamer	£20 / 40 GB	Love to stream shows, music, videos, or movies on the go? This plan has enough data to cover your needs, so there’s no need to worry about running out.
Heavy Data User	£30 / 125 GB	Whether you use your phone for frequent gaming and streaming or for large data tasks, the 125GB plan should work perfectly.
Switching from contract / Bought phone outright	Any Big Bundle Plan	If you’ve paid off your existing contract and are happy with your current handset, or have bought a new one outright, you’ll be able to choose any of O2’s Big Bundle plans.
Visiting the UK	8GB–40GB Plan	Great for short stays or trips to the UK. Pay upfront for what you need. There’s no contract or commitment, so you can buy a Big Bundle for 30 days and stay connected.

How to buy and use an O2 prepaid SIM

Choose your SIM type: O2 offers both physical SIM cards and eSIMs online and in-store.
Order or collect: Order online for home delivery, click-and-collect, or pick one up from an O2 shop.
Insert or activate: Pop the SIM in your phone or follow the eSIM activation steps.
Pick a 30-day Big Bundle deal: Choose the data allowance that best fits your usage and lifestyle, and proceed to pay upfront.
Top up credit: You can purchase an O2 top-up and add funds via the My O2 app or via the desktop site.
Confirm activation: You’ll receive a text from O2 letting you know when your bundle is active and ready to use.
Download the My O2 app: The app makes it easy to manage your plan, view usage, and buy add-ons in just a few taps.

How to manage your O2 SIM-only plan

Top up: You’ll be able to manually add credit using the My O2 app or via the website once your bundle expires after 30 days.
Check usage: You can also use the My O2 app to view remaining data, minutes and texts, 24/7.
Change your bundle: Need more or less data? O2 makes it easy to switch to a larger or smaller 30-day plan through the app. You can also switch plans by calling 2202 free from your O2 phone.
Add extras: Run out of data or exceeded your free 25GB EU roaming allowance? You’ll be able to buy one off Bolt Ons at any time.
Pause or cancel: Need to pause or cancel your plan? It’s easy! You can cancel via your account, or simply don’t top up.
Get support: If you’re having trouble managing your Big Bundle plan or need assistance from a friendly support agent, contact O2 customer service via the app, online chat, or in-store – they’ll be happy to help.

What are the Benefits of an O2 SIM-Only Plan?

There are loads of reasons why O2’s SIM-only plans are so popular, but don’t just take our word for it – check out the benefits below and see for yourself!

Simple 30-day plans to fit your needs.

Unlimited UK calls and texts are included with all Big Bundle plans.

Roam the EU worry-free and use up to 25GB of data during your travels – no extra charge!

25GB+ plans include international call minutes across 42 countries.

Includes data rollover up to your usual monthly allowance.

Flexible top-ups and easy-to-manage plans using the My O2 app or desktop site.

Enjoy up to 10% of your payments back via O2 Rewards.

Access to O2 Priority for special offers, events, and discounts.

Frequently Asked Questions

Can I keep my phone number if I switch to an O2 SIM-only plan?

Yes, you’ll be able to keep your number if you switch to an O2 SIM-only plan. If you’re currently with a different network provider, you’ll need to grab your Port Authorisation Code (PAC). To do this, simply text PAC to 65075 from the phone number you want to keep, and then provide your PAC to O2 when you order or activate your SIM.

What is the cheapest O2 Prepaid plan?

O2’s cheapest SIM-only plan is the 8GB option. This costs £10 per month and also includes unlimited calls and texts. O2 regularly runs data promotions on SIM-only bundles, so check out their website for the latest information.

How do O2 pay-as-you-go bundles work?

With O2 monthly bundles, you’ll pay upfront for calls, texts, and a specific amount of data, which lasts for 30 days. You can change your plan whenever you like, and pay manually with a top-up each month or set up automatic payments.

What happens if I use up the data in my O2 Big Bundle?

If you use up your data allowance earlier than planned, you’ll have a couple of options: you can either top up and renew your current plan or purchase a one-off Bolt On for extra data. If you find you’re smashing through your Big Bundle data quickly, it’s worth looking at a Big Bundle option with a higher data allowance.

Do I have to top up every month to use O2 Big Bundles?

Yes, Big Bundles from O2 last for 30 days and expire after this time. You will need to manually top up and buy your next bundle manually if you haven’t opted to auto-renew (this requires a sufficient balance). You can switch, pause, or cancel your bundle at any time.

Can I use my O2 data in Europe?

Yes, O2 covers roaming in the EU as standard on SIM-only plans (up to 25GB). Once you exceed 25GB, you’ll need to purchase a data Bolt On.

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