O2

O2 Outage Report in Cardiff, Wales

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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 and surrounding areas. An outage is declared when the number of reports exceeds the baseline, represented by the red line.

O2 Outage Chart in Cardiff, Wales 03/12/2025 08:20

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Most Reported Problems

The following are the most recent problems reported by O2 users through our website.

  1. Phone (60%)

    Phone (60%)

  2. Internet (19%)

    Internet (19%)

  3. Total Blackout (11%)

    Total Blackout (11%)

  4. Wi-fi (5%)

    Wi-fi (5%)

  5. E-mail (4%)

    E-mail (4%)

  6. TV (1%)

    TV (1%)

Live Outage Map Near Cardiff, Wales

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

Loading map, please wait...
City Problem Type Report Time
United KingdomNewport Internet
United KingdomCardiff Phone
United KingdomCardiff Phone
United KingdomRhoose Phone
United KingdomCardiff Total Blackout
United KingdomPontypridd Total Blackout

Community Discussion

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O2 Issues Reports Near Cardiff, Wales

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

  • DennerSusan susan denner (@DennerSusan) reported from Cardiff, Wales

    @O2 Customer service shocking! No service on phone since 24th May, SIX calls made to your call centre to resolve issue - now being told to wait for

  • CatTPeters Cat Peters (@CatTPeters) reported from Penarth, Wales

    @O2 come on please! I’ve now spoken to 3 people and now been out on hold for almost an hour. Unbelievable customer service. I literally just need the PAC code.

  • CatTPeters Cat Peters (@CatTPeters) reported from Penarth, Wales

    @O2 I’ve just tried again, it’s not working. Please can someone send it to me please. For a simple procedure it has become be my stressful, and nobody seems to want to help!

  • Hayeley Hayley (@Hayeley) reported from Cwmbran Central, Wales

    @O2 is there an option to setup a direct debit without making a phone call? It used to be set up but for some reason didn't change when I used the Switch service to move banks and I'm fed up of being told I'm behind on a payment. Can I do it via the app? Thanks

  • fgethearies FGE ⚡️ (@fgethearies) reported from Cardiff, Wales

    Anyone else on @O2 ? My signal keeps cutting in and out 😩

  • LisaEdwards78 LisaEdwards78 (@LisaEdwards78) reported from Barry, Wales

    @O2 Hi there I have had a highly Sophisticated national insurance scam call from a number registered to your network. There was an automated message purporting to be from the national crime agency. Please can you investigate this number 07850058296

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

    Hi @O2 as you’re aware I’ve been on no service now for over 3 weeks, any updates yet or? Or do I just continue to pay £60 a month for a phone I can’t use unless I leave my house ?? If someone with a brain cell can get in contact that would be fab 👍🏻

  • clareoj Clare Osborne Jones (@clareoj) reported from Cardiff, Wales

    @O2 still waiting for a refund on a returned phone case since July...numerous phone calls resulting in last one on 11/10 we will take it off your phone bill for you but full amount taken today. Can’t get through on phones can you please advise as I’m pretty fed up with service

  • Garethbird85 gareth bird (@Garethbird85) reported from Newport, Wales

    @O2 can someone from customer service contact me please

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

    When you’ve not been able to make any calls or texts whilst at home for the last 2 weeks as your phone is constantly on no service! 😡😡 take your time resolving this issue @O2 !!!!!!!!!!!!!

  • gwelfor57 Mark Elliott🏴󠁧󠁢󠁷󠁬󠁳󠁿🇪🇺 (@gwelfor57) reported from Cardiff, Wales

    @O2 am assisting my disabled brother. catch 22. No passport or driving licence unable to prove his identity. obtained a PAC. told est. £406.49 of termination charges! He wanted to reduce his monthly cost but O2 shop said no. Been customer for years. Help please.

  • gareth_thmpsn Gareth Thompson (@gareth_thmpsn) reported from Cardiff, Wales

    What is the point of complaining to @o2? Complaint sent 06/09 multiple times chased up formally 20/11 no reply now 06/0/21. Told someone looking at as a priority still nothing @MarkEvansO2

  • 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 🥳

  • JdBowns91 Jade Bowns (@JdBowns91) reported from Barry, Wales

    @O2 on the website it says to contact your customer services to change my name and other issues I want to discuss yet the only way I can get through to someone is to say I’ve had fraud occur! All I want to do is speak to someone why is it so hard. Chat is also unavailable

  • gareth_thmpsn Gareth Thompson (@gareth_thmpsn) reported from Cardiff, Wales

    @O2 There’s delay then there’s rude. Been 92 working days or 128 days since I complained. @o2 are making it deliberately difficult to contact.

  • 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.

  • gareth_thmpsn Gareth Thompson (@gareth_thmpsn) reported from Cardiff, Wales

    @O2 guys is there a backlog in complaints? I responded to a complaint on the 06/10/20 no reply, 20/11/20 no reply. I’ve now sent a further email today and I’ve no faith in it being responded to. Original complaint was 04/09/20.

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

    @O2 hi is there an issue with your network in cf14? Havent been able to get 3g or 4g since yesterday?

  • meribelman Peter Williams (@meribelman) reported from Penarth, Wales

    @virginmedia I would happily self serve online, via a browser or app, as you incessantly encourage me to do, but when the page says “oops something went wrong, we’re unable to change your package online”, its very frustrating. @O2 will help you soon!

  • flowersshanice S H A N I C E (@flowersshanice) reported from Cardiff, Wales

    @O2 @Gropinvillain In all these years I’ve been with @O2 I’ve never ever had nothing for bro g a loyal customer, maybe it’s time I cha he networks after my contract is finished!!

O2 Issues Reports

Latest outage, problems and issue reports in social media:

  • SLThomas99 Sara Thomas (@SLThomas99) reported from Sheffield, England

    @O2 - 2nd time got through to Customer Services rep Neil Clarke. Excellent service and very informative. A credit to your team and he could certainly have taught the first guy something. Please try to reduce hold times though took me nearly 2 hours in total 😬

  • AshleyW80814804 Ashley Webb (@AshleyW80814804) reported

    @O2 3 phone calls to customer services today, one call 30 mins, second 50 mins and I’m currently on the third ....1 hour 45 mins... still counting! Not heard a word from a soul. What’s happening!!

  • RosieCoee rOsie (@RosieCoee) reported

    @O2 still waiting for your fraud team to contact me regarding an urgent issue. I continue to receive threatening letters from you yet no contact to actually resolve the situation. I have phoned multiple times and customer service have been no help as they can’t transfer to fraud.

  • SarahPhelp Sarah Phelp (@SarahPhelp) reported

    @O2 hi O2! I’m currently abroad and am trying to get hold of customer service by phone. Every number takes me into a never ending PAYG top up loop... is there any other way to contact O2 from abroad?

  • Jay_1802 Gooner Jay (@Jay_1802) reported

    @O2 This Network Is Absolutely Garbage, Had No Mobile Data For 2 Weeks And They're Saying The Mast is Down In My Area, These Times I've Been Out And About In More Than 1 Location... Are All The Masts In London Down Then???

  • heyjayandes Jaime (@heyjayandes) reported

    @O2 @o2 Is there a complaints department? I’m £170 out of pocket because of damage caused by your staff.

  • AScottCoach Andrew Scott (@AScottCoach) reported

    Unbelievably bad service from @O2 After holding for hours to get through, told they could not take our call because my wife, who is not the a/c-holder, picked up the phone first, spoke & passed it to me, the a/c-holder. The call-handler then rang off mid-call (because 6pm?...)

  • shade306 Daniel Shade (@shade306) reported from Ashford, England

    @O2 is anyone able to help? I’ve tried to phone 202 but the auto lady won’t put me through and no one is free via the @O2 app. I’ve had a text telling me my tariff is expiring

  • SLThomas99 Sara Thomas (@SLThomas99) reported from Sheffield, England

    @O2 A very mixed service today. Nearly lost the will to live after being on hold for 27 mins then being put on hold and cut off - your first representative didn't even bother to call us back - do you know how frustrating that is! Another 35 mins on hold and finally got through!

  • idlewildgirl Sarah (@idlewildgirl) reported

    Hello @O2 I got the free trial of @disneyplus through my account but I can’t see when the free trial ends or how I cancel it?