O2 Discount Codes & Verified Offers for October 2026
Browse 27 manually checked O2 Promo Codes for October 2026, including Discount Codes, current discounts and exclusive deals. Expired offers are removed regularly.
O2 offers 0 coupon codes and 27 deals as of October 2026. Today's top offer: Free SIM Card with Any New Activation. Codes are verified and updated daily.
Receive a complimentary SIM card. This offer applies when you activate a new O2 plan.
Explore O2's range of 5G-ready SIM cards. Experience faster network speeds in supported areas.
Connect your devices with data-only SIMs. These are ideal for tablets and mobile broadband devices.
Order a complimentary Pay As You Go SIM for activation. Shipping is included with this offer.
Refer new customers to O2. Both you and your friend can receive bill credit.
Save on pre-owned devices. Refurbished phones offer a more affordable way to get a quality handset.
Browse a selection of affordable mobile phones available on a Pay As You Go basis. Devices are entry-level models.
Enjoy additional data allowance. Certain rolling plan SIMs include bonus data for a limited time.
Add international roaming bundles to your plan. Stay connected while traveling abroad.
Get ten pounds bill credit when you refer a friend who joins O2. The credit is applied after their first payment.
Purchase one international roaming bolt-on and receive a second one for free. This is for selected destinations.
Special offers for students heading back to school. Find deals on various SIM card options.
Find affordable mobile phones with no contract. These devices are suitable for Pay As You Go users.
Receive additional data allowances on specific rolling plan SIM contracts. This offer applies to new sign-ups.
Explore options for mobile broadband, including pocket hotspots and dongles. Stay connected on the go or at home.
Find SIM cards specifically designed for tablet devices. Plans offer various data packages to suit your needs.
During the back-to-school period, enjoy increased data on select student plans. This promotion supports educational needs.
Choose from various SIM Only plans. These deals are great for those who already have a phone.
Key workers receive a discount on O2 services. Present your Blue Light Card for this benefit.
Top up your international calling credit and receive a bonus 20% credit. This helps reduce costs for overseas calls.
Save on pre-owned mobile phones. Discounts vary by device model and condition.
New and upgrading customers can receive a six-month subscription to Disney Plus. This applies to eligible contracts.
Find affordable monthly SIM-only deals starting at ten pounds. These plans include calls, texts, and data.
Emergency services and NHS staff can receive special discounts. Present your valid Blue Light Card at checkout.
Sell your used mobile phones to O2 Recycle for cash. The value depends on the device model and condition.
Connect multiple family members under one account to share data and reduce overall costs. Customise plans for each user.
Trade in your used mobile phone. Receive credit towards a new device or your O2 bill.
Customer Reviews
Absolutely love my new phone!
My new refurbished handset arrived yesterday and it's perfect! It looks brand new, honestly couldn't tell it was refurbished. The setup with my existing O2 SIM was so easy. I'm telling all my friends about O2's refurbished phones, really impressed with the quality!
Good data, easy to use
Got a big bundles payg SIM for my old phone. It was super easy to activate online, didn't even need to call anyone. Data worked right away, which was a relief. The signal's been solid everywhere I've gone so far. Definitely a smooth experience.
Easy SIM purchase
Needed a new SIM for my old phone. Got a standard PAYG one from O2. It arrived super fast, like 2 days. Popped it in, activated it online, no problems at all. It just worked. Happy with it.
Good Big Bundle experience
I ordered a Big Bundle PAYG SIM last month. The website was easy to navigate to find the right plan. Delivery was pretty quick, it arrived two days earlier than the tracking said. Setting up the SIM was straightforward, I just followed the instructions in the pack. I've been using it for a few weeks now and the signal has been consistently good in my area. The data rollover feature is a nice touch, although I haven't needed it yet. My only small issue was trying to find out exactly how much data I had left sometimes, the app isn't always super clear on that front. But overall, a solid experience for a pay-as-you-go plan.
Detailed breakdown of my SIM only purchase
I went with a monthly SIM only plan, specifically the 5G option. Ordering online was pretty intuitive; I found all the plan details clearly laid out. The SIM arrived three business days after ordering, well within their stated delivery window. Activation was hassle-free using their online portal, and I was able to port my old number without any drama. Signal strength has been excellent, especially 5G in my area. I had a quick question about data rollover and their customer service chat was responsive and helpful. Overall, a very positive experience from start to finish.
Fast delivery, simple setup
Ordered a data-only SIM. Arrived quickly. Setup was straightforward. Works as expected. Good value for the data amount.
Good deal on a new SIM
I was looking for a cheap SIM for my tablet and found a good new customer offer for a tablet SIM. It came with extra data for the first few months, which was a nice bonus. The price per month felt fair for the amount of data I'm getting. It was definitely worth the purchase compared to other providers I looked at.
Decent sim only deal
I switched to a monthly SIM only plan with O2. The sign-up process online was pretty smooth, no real hiccups there. I kept my old number and that transferred over within a day, which was good. The 5G speeds have been impressive, definitely noticed a difference. Customer service was okay when I called about a billing query, took a little longer than I expected to get through to someone, but they sorted it out eventually. The price was competitive for the data I got, but I wish they had a bit more flexibility with international calling bolt-ons. Still, overall, I'm satisfied.
Reliable service again
I ordered another rolling plan SIM this time, just like last year. Delivery was quick, arrived in two days. Activation was smooth, no issues at all. It's nice knowing what to expect, and O2 consistently delivers good service. That's why I keep coming back.
O2 Community Discussion
Share tips, ask questions & help fellow shoppers save more
Is O2 Priority actually any good for freebies or discounts, or is it mostly just junk?
Is O2 any good for 5G? I'm in a pretty central area, wondering if the speeds are actually decent.
Does O2 do any student discounts for SIM only plans? Trying to save some cash while at uni.
Thinking of switching to O2, but I'm in Manchester. Is their 5G actually decent there or is it still super spotty?
Can I keep my old number if I switch to O2? Don't want the hassle of updating everyone.
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