O2

O2 Outage Report in Cardiff, Wales

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 10/28/2025 16:45

October 28: Problems at O2

O2 is having issues since 04:00 PM 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 (53%)

    Phone (53%)

  2. Internet (26%)

    Internet (26%)

  3. Total Blackout (14%)

    Total Blackout (14%)

  4. Wi-fi (4%)

    Wi-fi (4%)

  5. E-mail (3%)

    E-mail (3%)

  6. TV (%)

    TV (%)

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.

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:

  • 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

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

    @O2 How is that great value for a customer, when a sim only package is £30, yet its £35 when you purchase it with a phone?

  • 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.

  • 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...

  • 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" 🙄😡

  • 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

  • tweetkattweet Kathryn (@tweetkattweet) reported from Weston-super-Mare, England

    @O2 hi, I’ve been waiting for a SIM card to be delivered for over a week, tried speaking to your support people who wanted the code they’d sent to the phone which I couldn’t give them as I don’t have the phone! So frustrating

  • 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!

  • 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.

  • 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

    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

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

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

  • 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 👇

  • 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. :)

  • 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...

  • 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

    (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...

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

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

  • rich_t1977 Rich!! (@rich_t1977) reported from Weston-super-Mare, England

    @O2 Poor customer service again!!! Can’t get hold of anyone and just going round in circles on there so called, help, pages!!!

O2 Issues Reports

Latest outage, problems and issue reports in social media:

  • Lynbodegas WE ARE LED BY A PISH-MONGER (look it up😉) (@Lynbodegas) reported

    @jacqdodman Don’t go to @O2 whatever you do! 20 years loyalty to them, one problem and they can’t sort it😪

  • Lynbodegas WE ARE LED BY A PISH-MONGER (look it up😉) (@Lynbodegas) reported

    Even trying to leave @O2 after 20 years appears impossible- holding on for nearly 20 minutes 😡 automated help is rubbish. Really frustrated now!

  • ash_1888 ashleigh paton (@ash_1888) reported

    @O2 iv had to do two online chats via your web page asking for my voicemail to be turned off.. goes back to june yet today my voicemail is still turned on. dialing 1760 does not turn it off. i wish to make a complaint as yet again im having to contact you

  • KrystleLesley88 Krystle (@KrystleLesley88) reported

    @O2 your website is impossible! I've smashed my phone screen and want to get it repaired through the insurance I have with yourselves but your website keeps sending me round in circles. Please help!

  • mikebatson5d Mike Batson (@mikebatson5d) reported

    @O2 Your signal is atrocious, the only people that see 4g here is a fighter pilot doing a tight turn!

  • Hollie_Rix Hollie Russell (@Hollie_Rix) reported

    @O2 Will soon be???? I was told it had already?? Brilliant, incorrect information on your website and incorrect being given out by your ‘Customer Service’ team, what amazing service you give.

  • ch1lloe Chloe (@ch1lloe) reported

    @O2 also, I’ve had this problem for weeks and it’s not good enough for customers to be paying money and not receiving a service. Told to keep taking my sim out and rebooting until signal improves #nothappy

  • debsb1978 Debs (@debsb1978) reported

    @O2 Done all that. Am so over the poor service. Order cancelled. Really disappointing. Ur online customer service team r totally uninterested.

  • lingram03 Laura B (@lingram03) reported

    @EE Oh & @VodafoneUK and @O2 work perfectly in this same area, both indoor and outdoor signal. Ashleigh, Are you able to tell me why the engineers cannot visit either mast box and boost the signal/ are the masts even on?

  • reiver_rover Moira M (@reiver_rover) reported

    @kathrynmaryhall @O2 Thanks Kathy, it's just an interim solution until we get our BT Broadband on the 27th but certainly a lot better than having to go down to the bottom of the garden to make a phone call!