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 11/17/2025 18:15

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Most Reported Problems

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

  1. Phone (46%)

    Phone (46%)

  2. Internet (31%)

    Internet (31%)

  3. Total Blackout (16%)

    Total Blackout (16%)

  4. Wi-fi (3%)

    Wi-fi (3%)

  5. E-mail (3%)

    E-mail (3%)

  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 Phone
United KingdomCardiff Phone
United KingdomWeston-super-Mare TV
United KingdomCardiff Phone
United KingdomNewport Internet
United KingdomCardiff Phone

Community Discussion

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

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O2 Issues Reports Near Cardiff, Wales

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

  • themarkhawkins Mark Hawkins (@themarkhawkins) reported from Barry, Wales

    @viv_wilson @O2 I am in CF62 area, I haven't been able to get more than one bar for years, forget 3/4g Only keep it as I get a good signal in work.

  • 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 👇

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

    (1/4) Not a week after I was horrifically abused by an @o2 #CustomerServices agent, and even after I settled the payment issue (ongoing problems with #O2 automated systems since last Aug/Sep) that very day, I have today received three consecutive threatening/#legal letters...

  • 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 👍🏻

  • cymboi MH 🏴󠁧󠁢󠁷󠁬󠁳󠁿🏳️‍🌈🇪🇺 #yescymru (@cymboi) reported from Newport, Wales

    @virginmedia @O2 Why is your Hotspot so poor? Never connects!

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

    This weather properly has me over a barrel. Mistreatment by @O2 properly has me feeling down. My #CovidVaccine pain is bad. Some days the demons are just too much to battle...but today is not one of those days. Rest, relax, refocus. #MentalHealthMatters #BipolarDisorder

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

    (1/3) Sad to say that @O2 are now trying to charge me for a service never used, when I cancelled a mis-sold contract within the 14-day cooling-off period. Almost two months later they're now saying they're going to charge me a late payment fee, plus the bill...

  • 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

  • nopantsuk Nick Thorogood (@nopantsuk) reported from Llanharan, Wales

    @O2 my number should be ported to you today that I requested yesterday morning. I’ve had no confirmation texts or emails though and number still on old network. Any ideas?

  • 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!

  • Taxiboi3583 Adam Smith #BlackLivesMatter (@Taxiboi3583) reported from Beechwood, Wales

    @O2 Totally ignored my actual question, do I get a rebate on my bill if I experience technical issues?

  • 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

  • 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...

  • PattersonLela1 Lela Patterson (@PattersonLela1) reported from Barry, Wales

    Hi @O2. If you received a notification that a sound was played from my phone, please don’t worry. I was just testing out the Find My app on my iPhone, as I’ve never used it before, so I just wanted to check it out and see how it worked. Thank you and sorry. :)

  • PattersonLela1 Lela Patterson (@PattersonLela1) reported from Barry, Wales

    @O2 I didn’t receive an alert and neither did my family. It’s a fantastic idea, though! Are all Network operators doing this? :)

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

    If it wasn't for all the free benefits I got with @O2 Priority, I'd ditch them. Their #CustomerService is abysmal. It's like being in some weird kind of abusive relationship: "we'll treat you like **** but give you lots of free stuff so you'll want to stay with us" 🙄😡

  • divyaparikh_ Divya (@divyaparikh_) reported from Cardiff, Wales

    @O2 Thanks for all the help @O2! Just got a call saying matter has been resolved.

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

    (4/4) ...as being the fault of an automated system, without any recompense or any attempt to suggest that they can improve, is horrifying. I feel almost constantly threatened, intimidated, and abused by @O2 due to an issue that they caused, and they are making no attempt to fix.

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

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

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

    @BS3Rob @O2 @WBA Been horrendous for weeks - Can’t complete a call without having to call back numerous times - BS3 probably the worst of them all but M4 corridor from Cardiff to Bristol is a close second

O2 Issues Reports

Latest outage, problems and issue reports in social media:

  • StephenOld Sir Stephen Old Bart #LoyalSubjectOfThePinguwalda (@StephenOld) reported

    @O2 07834729800 I explained to you at length the problems I had in getting paid for my self-employed work earlier this year. Just tried to phone nos in letter from you on my landline. Lady tried to put me through to payment support. Got cut off. I should be able to pay by the...

  • Jakeyyd15 Jake 🌸 (@Jakeyyd15) reported

    Shoutout to @askesure - couldn’t come close to a competitors quote for renewal. But, rather refreshingly, their cancellation process was swiftly dealt with by the advisor over the phone. Unlike @O2 and @virginmedia who make it as painful as possible and hang up on you repeatedly

  • HarveyThomasCFC Harvey-Thomas John Keegan🏆🏆🏆💙💙 (@HarveyThomasCFC) reported

    For my #ChelseaFC followers who want to join a new phone network instead of @ThreeUK why don’t you try these guys instead @O2 @EE they are 2 of the best options out there in my opinion

  • Becca_Docherty_ Rebecca-Docherty (@Becca_Docherty_) reported

    @O2 shocking customer service! I'm owed £400 from a faulty device, 4 months on still no refund! Ridiculous amount of calls to customer service to get 0 help & fobbed off to a 'manager call back' I'm on maternity & relying on that payment! HELLO SOMEONE HELP!!! 😡

  • gerrytho Gerry (@gerrytho) reported

    @O2 still waiting on a manager call back weeks later??? What’s going on ?? #fail #sameoldcrapdaily

  • KevinPa90413404 kevin payne ⭐️⭐️ (@KevinPa90413404) reported

    @O2 I joined you just over a week ago. Ported my old number, but can’t call/text or receive any of the same from any other network or landline. Been into one of your shops 4 times now … they can’t resolve the problem. SIM exchanged yesterday & still the same. Please help.

  • hamzajahanzeb Hamza Jahanzeb is ont' 'olibobs🏖☀️ (@hamzajahanzeb) reported

    @O2 hi there I can't access my voicemail overseas?? Help !

  • jemweb Jeremy Webb (@jemweb) reported

    @O2 In Christchurch and three of us on o2 cant get signal or priority to load for the offers.

  • _jessmarsh98 Jessica🌹 (@_jessmarsh98) reported

    @O2 Hi, I've been made aware of the first thing, my problem is still the second thing. I ordered it to be delivered today, over 3 weeks ago. That why I preordered it. Do you even have an estimate date? I shouldn't have to be waiting passed ym promised date

  • TWRHQ Chris Brooke 😷 wear a mask (@TWRHQ) reported

    @O2 Your rep, Bilal in Leeds, just hung up on me in the middle of my call after I rang to complain about the rep I spoke to prior to him who also hung up on me rather than answer questions about this messed up @virginmedia & @o2 joint venture. Simply stunning customer service.