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 05/13/2025 19:20

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Most Reported Problems

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

  1. Phone (54%)

    Phone (54%)

  2. Internet (24%)

    Internet (24%)

  3. Total Blackout (12%)

    Total Blackout (12%)

  4. Wi-fi (5%)

    Wi-fi (5%)

  5. E-mail (4%)

    E-mail (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: Pontyclun, Pentyrch and Cardiff.

Loading map, please wait...
City Problem Type Report Time
United KingdomPontyclun Phone
United KingdomPentyrch Phone
United KingdomPentyrch Phone
United KingdomPentyrch Phone
United KingdomCardiff Phone
United KingdomCardiff TV

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:

  • BradChanner Brad Channer (@BradChanner) reported from Cardiff, Wales

    @O2 This has always been an issue. We are with giffgaff whom I believe use your signal. I have tried everything. I have even bought a booster, but the reception coming into the booster isn’t enough to even make the booster work. Very frustrating. I have to sit in a window 4 reception

  • 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

  • CJLittlemore Callum James Littlemore 🔶 (@CJLittlemore) reported from Cardiff, Wales

    @O2 I woke up this morning to find I’ve been totally cut off. I can’t make calls, send texts or use my mobile data. All of this is kinda important for my work as I’m self employed - I can’t call your customer service line to see what the issue is. Can you look into it please.

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

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

  • Bubwal Ade (@Bubwal) reported from Cardiff, Wales

    @RobBruceK @ThreeUK @O2 @EE @VodafoneUK No awful. Just spent 5 days with no data/calls due ti Insufficient bandwidth. My family and friends who were with O2/BT/Vodaphone had no problems. Worst ever. So regret leaving previous provider last month. Their coverage checker is inaccurate too

  • 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.

  • 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

  • BradChanner Brad Channer (@BradChanner) reported from Cardiff, Wales

    @teamIPSE Without a doubt! And phone signal! It is appalling how bad the signal is in parts of the UK outside of London! I am 4 minutes from the Cardiff city centre with no signal! #howareyoumeanttorunabusiness @o2networks @O2 @giffgaff

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

    @O2 your live chat service is garbage. 15

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

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

  • 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 🤯

  • daunce4thstreet Garry Dauncey (@daunce4thstreet) reported from Pontypridd, Wales

    Never use @O2 recycle! sent them a phone that was in perfect condition & now they say the phone is damaged and are offering peanuts for it. If it’s damaged blame the flimsy packaging you send.

  • 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! 🤬

  • 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.

  • 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 😔

  • 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

  • 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’

  • 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!

  • 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

O2 Issues Reports

Latest outage, problems and issue reports in social media:

  • ThisIsCMBarnes Chris Barnes (@ThisIsCMBarnes) reported

    @OurPritch @O2InstituteBham @O2 True, who hasnt accidentally been convicted of domestic abuse? Maybe next time he'll accidentally throw her down the stairs when hes pissed "It happened once" - wow. Forgot once is allowed. Unfortunately alot of domestic abuse sufferers do end up staying with their abuser too

  • mrtuition frank (@mrtuition) reported

    @O2 went to my local cafe Nero today and app said coffee out of stock at 2pm??? This hasn’t happened for the past 2 years? Pls explain as a loyal customer

  • JessiicaLouiise x 𝐉𝐄𝐒𝐒𝐈𝐂𝐀 x (@JessiicaLouiise) reported

    why is my signal and internet so rubbish lately? one bar of signal, nothing ever loads off the wifi.. and my calls are constantly dropping. @O2 😑

  • jrob10001 James Robinson (@jrob10001) reported

    @O2 Why did it run out? It never ran out since March 2020.

  • ItsFree2BKind Mm (@ItsFree2BKind) reported

    @JamesGoz @O2 Broadband issues?

  • HeadsInTheMusic Chlo (@HeadsInTheMusic) reported

    @O2 employees seem to be either stupid or just don’t listen to you 🙄

  • bigjimble Jamie King 🇪🇺 (@bigjimble) reported

    @O2 absolutely useless customer services. Have been waiting for a refund for a product you couldn’t deliver for A MONTH. Financial ombudsman has been contacted.

  • Jugdar013 Kelsey (@Jugdar013) reported

    2 hrs trying to fix one ***** up that added many other issues with @o2 and @DPDgroup_news Courier bare faced lied and o2 CS is a nightmare...4 attempts before speaking to someone competent and who wouldn't hang up after 5 seconds @AngryConsumer

  • smots_gtfo brian (@smots_gtfo) reported

    @ThisIsCMBarnes @O2InstituteBham @O2 I don't really care what they've done tbh, as long as the music sounds good I'd be fine seeing anyone. If it was that bad they'd be in prison.

  • thatgirlthere14 ...-- (@thatgirlthere14) reported

    @O2 you absolute joke of a network