O2

O2 Outage Report in Cardiff, Wales

Some problems detected

Users are reporting problems related to: phone, internet and total blackout.

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 08/19/2025 05:35

August 19: Problems at O2

O2 is having issues since 08:20 AM GMT. Are you also affected? Leave a message in the comments section!

Most Reported Problems

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

  1. Phone (52%)

    Phone (52%)

  2. Internet (25%)

    Internet (25%)

  3. Total Blackout (15%)

    Total Blackout (15%)

  4. E-mail (4%)

    E-mail (4%)

  5. Wi-fi (3%)

    Wi-fi (3%)

  6. TV (1%)

    TV (1%)

Live Outage Map Near Cardiff, Wales

The most recent O2 outage reports came from the following cities: Weston-super-Mare, Cardiff, Cwmbran Central and Newport.

Loading map, please wait...
City Problem Type Report Time
United KingdomWeston-super-Mare TV
United KingdomCardiff Phone
United KingdomNewport Internet
United KingdomCardiff Phone
United KingdomCardiff Phone
United KingdomCardiff Internet

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:

  • 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 🤯

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

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

  • 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

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

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

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

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

  • 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

  • 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

  • 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.

  • 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! 🤬

  • 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!

  • 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.

  • 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 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

  • 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 😔

  • 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’

  • 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.

  • 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.

O2 Issues Reports

Latest outage, problems and issue reports in social media:

  • JacobD93 Jacob Davies (@JacobD93) reported

    @O2 Would I need to cancel it and then re-add it as an extra? Thanks.

  • Ioanaa99 Ioana (@Ioanaa99) reported

    @O2 when I try to call someone it says call failed even if I have minutes. It is very urgent, can you please help me

  • RossKewley8 Ross Kewley (@RossKewley8) reported

    @O2 I did I sim swap yesterday about 2 in the afternoon and my phone still hasn’t come back on, customer services just puts the phone down any chance you can help

  • cheleroach81 Chele Roach (@cheleroach81) reported

    @O2 Can you please help me out. My 70 year old uncle is on pay as you go and is currently spending £15 per month on credit. As he is classed as extremely vulnerable ( pulmonary fibrosis and copd) he has been shielding since last March. Is o2 offering any extra data due to covid?

  • Amyylowe Amy (@Amyylowe) reported

    @O2 WHY when I call up got help do I have to sit through automated messages and then before I can speak to someone it HANGS UP ON ME?!?! This is infuriating 😩😩😩 can you please dm me then call

  • dianej1980 di (@dianej1980) reported

    Seriously hating joining @o2 never get a call bk when promised 3rd time now should have had a manager call back and 3 times still nothing so I call and then get hung up on after being om hold for a while really frustrating

  • MizanThePoet Mizan ThePoet (@MizanThePoet) reported

    Hi @O2 I have been a customer of yours for several years, I recently upgraded my phone however recently I have been having trouble with phone calls. The line keeps on going in and out during mid-conversation. Pls tell me whats going on Thx

  • ChezPoule Deb (@ChezPoule) reported

    @O2 Trying to pay off my device and buy a new phone. Spent all day waiting for a call but nothing. Can't pay off online and the App never works on my device. Want to speak to a real person. Frustrated

  • JonnyMudd88 Jonny Mudd (@JonnyMudd88) reported

    @O2 please can you message me a contact number? The messaging service isn’t working the MyO2 app! I haven’t had data for 4 days and can’t work out how to fix it

  • LUFCLDP1989 Luc (@LUFCLDP1989) reported

    @O2 only had a new phone for 4 days and it's constantly overheating and shutting down. I've managed to get it back on now but the device is doing it whenever I open a app or stay on a call for a while