O2

O2 Outage Report in Cathays, 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 Cathays, Wales

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

O2 Outage Chart in Cathays, Cardiff, Wales 03/10/2026 05:45

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Most Reported Problems

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

  1. Phone (47%)

    Phone (47%)

  2. Internet (32%)

    Internet (32%)

  3. Total Blackout (15%)

    Total Blackout (15%)

  4. Wi-fi (3%)

    Wi-fi (3%)

  5. E-mail (3%)

    E-mail (3%)

  6. TV (%)

    TV (%)

Live Outage Map Near Cathays, Cardiff, Wales

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

Loading map, please wait...
City Problem Type Report Time
United KingdomTreharris Phone
United KingdomNewport Internet
United KingdomCardiff Phone
United KingdomCardiff Phone
United KingdomNewport Phone
United KingdomPorth Phone

Community Discussion

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O2 Issues Reports Near Cathays, Wales

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

  • BCFCOLIVERDOG Oliver City Dog (@BCFCOLIVERDOG) reported from Cardiff, Wales

    @JoeSims10 @O2 Look forward to no signal on the Portway Joe 🙃

  • jamcole88 🇬🇧Jamie🏴󠁧󠁢󠁷󠁬󠁳󠁿 (@jamcole88) reported from Pontnewydd, Wales

    @SkyHelpTeam @O2 why is the network signal so poor/non existant in Cwmbran NP44

  • bethanjane22 Beth (@bethanjane22) reported from Cardiff, Wales

    When I renew, @virginmedia offer free AirPods with some plans and @O2 do the same! So much for customer loyalty, they just want more and more money! 🤬

  • DoddAimee Aimee Dodd (@DoddAimee) reported from Weston-super-Mare, England

    @O2 wonder if you can help - I want to add my husband to the family plan, he has his PAC code, how do I transfer him across 🤔#o2help

  • andrewhillandCo andrew hill (@andrewhillandCo) reported from Abercynon, Wales

    @O2 @JohnnyMercerUK bit late that isn’t it - I think he has just a few followers who may have seen this and your ‘standard good customer response’

  • 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

  • callumcrowley Callum Crowley (@callumcrowley) reported from Liswerry, Wales

    @O2 customer service are an absolute joke - can’t wait to change my provider #pathetic

  • 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.

  • staceyjhubbard Stacey J Hubbard 🐧 (@staceyjhubbard) reported from Cardiff, Wales

    There is always some kind of problem with my @O2 order. Its even more frustrating seeing on here people have just walked into the store and been able to collect the phone without the relevant email saying its ready to collect. How do they know they are distributing the right

  • 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.

  • 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

  • StephenADwyer The Dwyer Identify (F) (@StephenADwyer) reported from Caerleon, Wales

    @O2 No signal for two , now on the third day , all your help lines etc are busy , no support or help , not the best customer service but you will still take my money , not impressed at all

  • staceyjhubbard Stacey J Hubbard 🐧 (@staceyjhubbard) reported from Cardiff, Wales

    Also when I highlighted my issues over the phone and through the Webchat @O2 do not seem very concerned or understanding 😔

  • paigebuckingham Paige🧚🏻‍♀️🌸 (@paigebuckingham) reported from Cardiff, Wales

    Anyone else on @O2 and get literally no signal? I’ve had my baby’s doctor and hospital ring me many occasions and can’t get through to me!

  • peterkin1010 Peter MacCabe (@peterkin1010) reported from Barry, Wales

    @pinecone95 @O2 It's coming along slowly but surely. No sign in Barry or Cardiff yet.

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

    @Annabanana8008 @virginmedia @O2 Good luck to you and don't take any sh*t, you should be fully compensated for the absolute inconvenience. We had a little problem with our provider and they where excellent, understood the issue and before we asked they compensated us.

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

    Hi @O2 I’m in desperate need for someone to active my new sim (had an upgrade) as I’m unable to text or call out viseversa. My o2 isn’t solving the issue either.

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

    @O2 your live chat service is garbage. 15

  • callumcrowley Callum Crowley (@callumcrowley) reported from Liswerry, Wales

    @O2 customer service is the worst - transferring me to the sales team knowing they’re closed to fix an error that’s theirs. Can’t wait to change providers - pathetic

  • LisardoVivas Lisardo Vivas (@LisardoVivas) reported from Cardiff, Wales

    @O2 @tig1985 I’m in cardiff with same issue

O2 Issues Reports

Latest outage, problems and issue reports in social media:

  • Blurred_Lynes Rhian (@Blurred_Lynes) reported

    @O2 I submitted a complaint on the 24th March and reicevr and mail saying I'd get a response in 7 days. It's now been a full month and I haven't heard anything. Appreciate sometimes it is busy, but what is your current response time?

  • laurawatts Laura Watts (@laurawatts) reported

    Can some kind uk soul pass on @O2 support international phone number? Thanks.

  • tacjets Aaron (@tacjets) reported

    @modernbeauty_ @O2 @modernbeauty_ my roaming in France not working either along with my parnters too. And someone else tweeted their roaming not working in Ireland. Definitely something wrong with 02

  • RichMoors Rich Moors (@RichMoors) reported

    @tacjets @O2 The first thing I did was check the service and it said everything was fine so but there is 3 of us and none of our phones are connecting, must be a problem somewhere Hopefully it will be a quick fix

  • rwells123 Richard Wells (@rwells123) reported

    @O2 roaming not working in Spain

  • tacjets Aaron (@tacjets) reported

    @O2 Hi yes both of us tried manually selecting networks. It hasn't worked unfortunately - our signal bars on our phones (S21 ultras) do not show the small "R" for roaming - last 3 days in France it showed the "R" our roaming is 100% turned on - like I said last 3hrs stopped working.

  • SmolXeno 🌈 Lyka 🌈 (@SmolXeno) reported

    @O2 what's the easiest way to cancel device insurance on a pay monthly contract? Noticed that I'm being charged £15 a month for insurance that I never asked for!!

  • emersonpje street dog (@emersonpje) reported

    @O2 mobile service is down in Spain. It went down here approx 1 hour ago. I’ve reset and checked all mobile network settings. It won’t connect manually or automatically to any Spanish network here!

  • ConorJonEllis Conor Jon Ellis (@ConorJonEllis) reported

    Hi @O2 - I’m in Italy and my phone can’t find a network 🙃 I’ve turned roaming on and off again and all the usual things, can you help?

  • RichMoors Rich Moors (@RichMoors) reported

    @O2 is your service down in Ireland as I have just landed and my phone won’t connect (luckily the airport has WiFi)