O2 SIM Only Deals: Flexible Plans for Data, Calls & Texts

Looking for a SIM only deal with reliable coverage and flexible plans? O2 offers some of the UK’s most popular SIM only deals, perfect for streaming, browsing, and staying connected on the go. Whether you want unlimited data or a budget-friendly option, O2’s network delivers strong 4G and 5G coverage nationwide.

Why Choose an O2 SIM Only Deal?

O2 is a top choice because of:

• Wide Coverage: Excellent 4G and expanding 5G network across the UK.
• Unlimited Calls and Texts: Most plans include unlimited minutes and texts.
• Flexible Contract Lengths: Choose from 1-month rolling or 12-month contracts.
• Priority Tickets: Exclusive access to O2 Priority events and offers.
• Wi-Fi Calling and VoLTE: Clear calls even in low signal areas.
• Data Rollover: Some plans allow unused data to roll over to the next month.

Compare O2 SIM Only Plans

O2 offers a variety of SIM only deals to suit different needs and budgets. Whether you want unlimited data for streaming or a smaller data allowance for light use, there’s a plan for you. Contract lengths include flexible monthly rolling plans or longer 12-month deals with cost savings.

Frequently Asked Questions About O2 SIM Only Deals

Is a SIM only deal with O2 cheaper than a phone contract?

Yes, SIM only deals are generally cheaper since you’re not paying for a new handset. If you already own a phone, O2 SIM only plans can save you money compared to bundled contracts.

Can I keep my number when switching to O2?

Absolutely. You can keep your existing mobile number by requesting a PAC (Porting Authorisation Code) from your current provider and providing it to O2.

Do I need to unlock my phone to use an O2 SIM?

Yes, your phone must be unlocked to accept an O2 SIM. If your phone is locked to another network, contact them to unlock it before switching.

How much data do I need on an O2 SIM only deal?

It depends on your usage. Light users might need 2-10GB, while heavy streamers and gamers may want unlimited data plans.

Are there SIM only deals with no credit check on O2?

O2 SIM only Pay Monthly plans require a credit check. For no credit checks, consider Pay As You Go options.

What’s the difference between 1-month and 12-month SIM only plans?

12-month contracts usually offer lower monthly rates but require commitment, while 1-month rolling plans offer flexibility and can be cancelled anytime.

How do I cancel an O2 SIM only plan?

You can cancel rolling plans anytime with no penalty. For 12-month contracts, early cancellation fees may apply.

Does O2 offer unlimited data SIM only plans?

Yes, O2 offers unlimited data plans with no caps, perfect for heavy users who need lots of data.

Can I use my O2 SIM for tethering/hotspot?

Yes, all O2 SIM only plans support tethering, allowing you to share your data with other devices.

Do O2 SIM only plans come with 5G?

Yes, all current O2 SIM only deals support 5G, provided you have a compatible 5G device.

What is a PAC code and how do I get one to switch to O2?

A PAC code lets you transfer your number to O2. Request it from your current provider by texting or via their website, then provide it to O2 to complete the switch.

What networks use O2’s coverage?

O2 operates its own network and also supports several MVNOs that run on its infrastructure.

Are there family or multi-SIM discounts on O2?

O2 offers multi-SIM plans and bundles for families, but specific discounts vary. Check Olimit’s website for current deals.

Can I use an O2 SIM abroad?

O2 includes roaming in many plans through their O2 Travel service, with usage in Europe and selected destinations either included or for a daily fee. Look for in the deal listings.

Are SIM only plans on O2 suitable for bad credit?

Pay Monthly plans require credit checks, so if you have bad credit, consider O2’s Pay As You Go SIMs or other providers. Look for in the deal listings.

O2-Specific Questions

What is O2 Priority and how do I get it?

O2 Priority gives customers exclusive access to tickets, offers, and discounts. It’s included with all O2 plans and activated via the O2 app.

Does O2 support Wi-Fi Calling and VoLTE?

Yes, O2 supports both Wi-Fi Calling and VoLTE to improve call quality and coverage indoors.

How good is O2’s coverage and network speed in the UK?

O2 provides strong 4G coverage across most of the UK, with 5G coverage growing steadily. Speeds are competitive but slightly behind EE in some areas.

How do O2’s SIM only plans compare to other providers like Vodafone or EE?

O2 offers excellent coverage and perks like Priority, while EE and Vodafone may have faster speeds or wider 5G coverage in some areas. Pricing and benefits vary.

Can I get eSIM with O2 for my phone or smartwatch?

Yes, O2 supports eSIM activation for compatible devices, letting you use a SIM without a physical card.

Are O2 SIM only deals good for tourists or short stays in the UK?

O2’s rolling monthly plans are suitable for tourists needing flexible short-term UK connectivity.

How do I top up or manage my O2 SIM only plan?

You can manage your account, top up, or change plans through the O2 website or O2 app available on iOS and Android.

Is there a student or NHS discount on O2 SIMs?

O2 occasionally offers special deals for students and NHS workers. Check Olimit for the latest promotions.