O2

O2 Outage Report in Mountain Ash, Rhondda Cynon Taf, 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 Mountain Ash, Wales

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

O2 Outage Chart in Mountain Ash, Rhondda Cynon Taf, Wales 09/10/2025 06:50

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Most Reported Problems

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

  1. Phone (52%)

    Phone (52%)

  2. Internet (24%)

    Internet (24%)

  3. Total Blackout (16%)

    Total Blackout (16%)

  4. E-mail (4%)

    E-mail (4%)

  5. Wi-fi (4%)

    Wi-fi (4%)

  6. TV (1%)

    TV (1%)

Live Outage Map Near Mountain Ash, Rhondda Cynon Taf, Wales

The most recent O2 outage reports came from the following cities: Blackwood.

Loading map, please wait...
City Problem Type Report Time
United KingdomBlackwood Total Blackout
United KingdomCardiff Phone
United KingdomCardiff Phone
United KingdomCardiff Phone
United KingdomCardiff Internet
United KingdomMountain Ash 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 Mountain Ash, Wales

Latest outage, problems and issue reports in Mountain Ash and nearby locations:

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

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

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

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

  • jamieriddell Jamie Riddell (@jamieriddell) reported from Cardiff, Wales

    Hey @O2 who can I talk to about unlocking a phone. I've paid up and out of contact. Online form says no because of too many attempts ( no idea what my customer service code was) but I have all my account details.

  • 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

  • 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 🤯

  • 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.

  • 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!

  • 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 😔

  • 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

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

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

  • MartynWilliams6 master.vapour (@MartynWilliams6) reported from Maesteg, Wales

    @tescomobile I do enjoy your network, even being part of the @O2 family

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

    @O2 your live chat service is garbage. 15

  • pwilliamsevents Paul Williams Events (@pwilliamsevents) reported from Tongwynlais, Wales

    Totally disappointed with @O2 customer service. A number transfer from a consumer account to business took 8 days when I was told it would take 24 hours. 3 phone calls to customer service and still not 100% sorted. #totallycrapexperience

  • 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’

  • gingio Shane (@gingio) reported from Cardiff, Wales

    @jgfoxy @O2 @ThreeUK Good choice! I love being with 3 and find my signal is much better than that on my work phone which is o2.

  • 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.

  • 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.

  • 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! 🤬

  • pwilliamsevents Paul Williams Events (@pwilliamsevents) reported from Tongwynlais, Wales

    @jolilford @O2 Your kidding me!!! I have contacted customer services 3 or 4 times. Shocking service

  • 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

O2 Issues Reports

Latest outage, problems and issue reports in social media:

  • Bastythegreat Perry Watts (@Bastythegreat) reported

    @o2 why do I have 4g or even 5g yet never get any internet at all! It's literally abysmal and I'm fed up paying a massive monthly bill for diabolical service! How can I get a discount for how awful it is?

  • Lukas_aber_ami Luke, but German (@Lukas_aber_ami) reported

    Tmw your (berl)internet is so slow, a speed test won't even load. @o2 #o2 #berlinternet

  • KaneNay2504 Kane (@KaneNay2504) reported

    @O2 absolute joke been a week since I’ve ordered and still not got the phone, DHL are a shambles and o2 not doing anything to help or progress!!

  • Bradleyevanslfc Bradley Evans (@Bradleyevanslfc) reported

    @NeilClasperPics @O2 I have the exact same issue, @O2 it is relentless

  • HarpSilver Harp (@HarpSilver) reported

    The thing that has me curious is why was @O2 part of the @GoogleUK Pixel watch promotion if it can't give LTE connection to the watch strange? Apparently only EE or Voda will do it and I'm not using Voda but I have a EE contract but their customer service piss poor arrrgh.

  • Telenikros John Thorne (@Telenikros) reported

    @O2 can you please look at the signal in Liverpool near sir Thomas Street bus stops, the phones say that the signal is max 4g but we are not able to get any form of Internet service there.

  • CloudXElite Megan Kenway-Head (@CloudXElite) reported

    @O2 thankyou for stealing nearly 500 from my partners bank account 2 weeks ago for an account you guys never cancelled after claiming you had. With bank details you also claimed you didn't keep. We are now starving. My kids are on rations. Council tax bounced.

  • Becca75131176 Becca (@Becca75131176) reported

    @O2 Please can you fix my account first please ?

  • EmpireFF Empire (@EmpireFF) reported

    @Wavyhill @O2 Sorry to jump in here but I am having the exact same issues. O2 cut my physical SIM card off and I have not received my eSim as promised and I’ve had no signal all day. How did you get this revolved? I’ve made 3 phone calls to O2 today and nobody knows how to fix this

  • SnapeyWapey AR Spade BA BSc♠️ dark fiction writer. (@SnapeyWapey) reported

    I missed calls for appointments with my MH and neuro nurse because it had no charge and yet you still claim I made international calls. Hang your head in shame @O2