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O2

O2 outages and service status in Cardiff, Wales

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Full Outage Map
  • O2 generated 0 outage signals in the last 24 hours around Cardiff, including 0 direct reports.
  • The most common problems reported in this area mention Phone.
  • 100% Phone (100%)

The latest reports from users having issues in Cardiff come from postal codes CF23 .

O2 is the commercial brand of Telefónica UK Limited offering mobile phone and mobile internet service, including voicemail and SMS. With over 25 million customers, O2 runs 2G, 3G and 4G networks across the UK. O2 previously offered home broadband service.

Problems in the last 24 hours in Cardiff, Wales

The chart below shows the number of O2 reports we have received in the last 24 hours from users in Cardiff, Wales and surrounding areas. An outage is declared when the number of reports exceeds the baseline, represented by the red line.

At the moment, we haven't detected any problems at O2. Are you experiencing issues or an outage? Leave a message in the comments section!

Live Outage Map Near Cardiff, Wales

The most recent O2 outage reports came from the following cities: Cardiff.

CityProblem TypeReport Time
Cardiff Phone 9 days ago
Porth Phone 2 months ago
Pontypridd Phone 2 months ago
Pontypridd Internet 3 months ago
Barry Phone 3 months ago

Community Discussion

Tips? Frustrations? Share them here. Useful comments include a description of the problem, city and postal code.

Beware of "support numbers" or "recovery" accounts that might be posted below. Make sure to report and downvote those comments. Avoid posting your personal information.

O2 Issues Reports Near Cardiff, Wales

Latest outage, problems and issue reports in Cardiff and nearby locations:

  • bigjeans68
    Eugene O’Carroll (@bigjeans68) reported from Langstone, Wales

    Shocking signal today on o2 postcode NP18 1NF @O2 @mrsclart

  • Lea_May_
    Lea French (@Lea_May_) reported from Cardiff, Wales

    @O2 don't recommend upgrading with o2. Terrible service, can't speak to anyone on the phone and waited for over a week for my delivery that was due on Monday!

  • Daniel_Lyddon
    Daniel Lyddon (@Daniel_Lyddon) reported from Cardiff, Wales

    30 mins on hold to @O2 customer services, spoke to an agent who has now put me on hold to speak to transfer me to #CustomerServices...so God knows who the hell I got through to 🙄😡 #FirstWorldProblems

  • ieuanbeal15
    Ieuan-Rhys Beal (@ieuanbeal15) reported from Cardiff, Wales

    @O2 your live chat service is garbage. 15

  • HywelButcher
    Hywel Butcher (@HywelButcher) reported from Cardiff, Wales

    Top tip - don’t join @O2 - incompetent and useless! First no 4G, now no signal or data at all 🤯

  • Waldron_Diana
    Diana Waldron (@Waldron_Diana) reported from Cardiff, Wales

    @O2 can u please help. I have been trying to pay my final bill with you for ages. It’s only about £20,I don’t need harrazing letters&emails to prompt me to pay...I just need u to let me pay. I have called&been online to make payment, but you don’t seem to want to take my payment

  • 92danielleyoung
    Dani 💋 (@92danielleyoung) reported from Alway, Wales

    What’s up with @O2 gone down before anyone can even get Peter Kay tickets 🤬🤬🤬🤬

  • AdamLee2011
    Adam Lee (@AdamLee2011) reported from Newport, Wales

    @O2 Already with o2 for my mobile and they are brilliant. This was for MiFi, someone recommended three but the signal is terrible. Waste of money.

  • pwilliamsevents
    Paul Williams Events (@pwilliamsevents) reported from Tongwynlais, Wales

    @jolilford @O2 Your kidding me!!! I have contacted customer services 3 or 4 times. Shocking service

  • BradChanner
    Brad Channer (@BradChanner) reported from Cardiff, Wales

    @O2 This has always been an issue. We are with giffgaff whom I believe use your signal. I have tried everything. I have even bought a booster, but the reception coming into the booster isn’t enough to even make the booster work. Very frustrating. I have to sit in a window 4 reception

  • Statto1927
    Simon Hiscocks (@Statto1927) reported from Barry, Wales

    @O2 It’s CF11 8AZ. ardiff City Stadium. My point is that I can hardly get any connectiveity with a 4G signal showing. Someone sat next to me with EE can connect. Granted it’s a sports stadium but this was 60m before kick off with barley anyone in there. Happens every match 1/2

  • sarlpar
    Sarah (@sarlpar) reported from Henllys, Wales

    @O2 your coverage in the Cwmbran area NP44 is shocking, no end of people on O2 post about the poor signal especially around the Llanyrafon and Henllys/TyCanol area. When we ask about if there are any signal issues we’re told there’s not, Vodafone, EE and 3 work prefect. 😖

  • SamHallWales
    Sam Hall 🏴󠁧󠁢󠁷󠁬󠁳󠁿🐾🐾🌈 (@SamHallWales) reported from Cwmbran Central, Wales

    This Christmas, @O2 is donating data to those who need it. For every tweet using #O2DataPledge this Giving Tuesday, they'll donate even more data to the National Databank. Tap below to tweet your support 👇

  • ChrisEddy_7
    Eddy 🏴󠁧󠁢󠁷󠁬󠁳󠁿 (@ChrisEddy_7) reported from Cardiff, Wales

    It’s come to something when you can get 4 bars of 4G signal walking between Benidorm and Albir in Spain but can’t even get 3 bars of 3G signal in Cwmbran South Wales 👀 @o2

  • TweetterRoss
    Ross Maisey (@TweetterRoss) reported from Church Village, Wales

    @O2 Struggling with no or little service at home at the moment and it’s becoming very frustrating. I checked the service checker and they comes back as ok. My phone says 1 bar but that doesn’t allow me to use the internet.

  • STJonesx
    S T Jones (@STJonesx) reported from Alway, Wales

    3rd week of no signal and @O2 in absolute NO rush to fix the issue. Can’t wait to cancel my contract this week 🥳

  • CJLittlemore
    Callum James Littlemore 🔶 (@CJLittlemore) reported from Cardiff, Wales

    @O2 I woke up this morning to find I’ve been totally cut off. I can’t make calls, send texts or use my mobile data. All of this is kinda important for my work as I’m self employed - I can’t call your customer service line to see what the issue is. Can you look into it please.

  • Daniel_Lyddon
    Daniel Lyddon (@Daniel_Lyddon) reported from Cardiff, Wales

    (2/4) ...from @o2 dated TWO DAYS after the issue was, I was told, cleared up. A call to #O2 #AccessForYou this afternoon shows the issue is cleared up and the letters are auto-generated because payments can take up to 48hrs to register with O2...

  • BristolOli
    Bristol Oli (@BristolOli) reported from Cardiff, Wales

    @BS3Rob @O2 Glad it wasn’t just me - No signal anywhere near the ground

  • BigDogWrestler
    Big Dog (@BigDogWrestler) reported from Newport, Wales

    @Annabanana8008 @virginmedia I feel for you, if @O2 and @virginmedia do merge, I'm leaving at the earliest opportunity. @virginmedia leave me a little cold and with no confidence as a customer.

O2 Issues Reports

Latest outage, problems and issue reports in social media:

  • JohnTillUK
    John Till (@JohnTillUK) reported

    My saga with @o2 just gets better and better. Raise a complaint and asked to be contacted by email, receive an acknowledgement of my preference… So what do they do, try calling me instead. Getting sick of it now.

  • MattRidsdale
    Matthew Ridsdale (@MattRidsdale) reported

    @O2 Well, I have never known anything as utterly shambolic as your customer service! Another two hours wasted tonight trying to help my mum resolve an issue with that occurred in JUL2025! Still no sign of a resolution. Come on, let's get it sorted. This is beyond a joke.

  • SarahWM45
    Sarah H (@SarahWM45) reported

    Two years of no service from @O2. Two years of paying two contracts to them despite this. And still they want £189 early exit fee. Have been waiting 2 weeks for a call back!! Lots of promises, no call. Yet have received an enforcement notice!! Intentional possibly?@MartinSLewis?

  • jhargie4
    john (@jhargie4) reported

    @o2 @virginmedia @Virgin CEO LUTZ SCHUELER seems only your bot accounts actually care about the customer

  • donnyhendry82
    Neil Hendry (@donnyhendry82) reported

    @o2 why do you reduce mobile jnternet signall all the time, one mjnute youve got internet workjng properly and then with samme full 5g signal it stops working why am i oaying you for a service that i djnt get

  • Stuartylovesya
    Stuarty Mccarroll (@Stuartylovesya) reported

    @BelfastGiants @O2 I know it's been less than 24 hours, but i wonder how the jersey sales are going in comparison to previous seasons... 👀I'd guess they haven't gone well. Still time to rectify these poor decisions. White jersey is fine, the other three, horrible... Giants logo HAS TO BE central

  • MisraSonali
    Dr Sonali Misra (@MisraSonali) reported

    @O2 I am travelling internationally and your app Help centre isn’t showing me any options to speak to an agent. And I don’t want to make international calls to your call centre. Please help. I have been wrongly charged for an extra month

  • Abdabz
    Pabs (@Abdabz) reported

    @TakeThatClouds @O2 Wasn't like that back when I worked there as a customer service process manager... @O2 You can hire me again for quadruple what you paid me last time and I'll fix this 👍

  • JohnTillUK
    John Till (@JohnTillUK) reported

    @sackedseafarer @O2 But I keep getting errors “Too many page redirects occurred” whether I use the app or website. I then tried to submit a complaint online and guess what, that throws an error too! So raised it via X DM and given a complaint ref and assured I’d be contacted via my preferred channel

  • SarahWM45
    Sarah H (@SarahWM45) reported

    @O2 absolute joke. Stringing me along, promising to call. Two weeks later. No call. Apparently that’s my fault, they were waiting on me. (They’re not). They are unable to answer a simple question. Customer service v stressful to deal with. @MartinSLewis