O2

O2 Outage Report in Treharris, Merthyr Tydfil County Borough, Wales

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The latest reports from users having issues in Treharris come from postal codes CF46.

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 Treharris, Wales

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

O2 Outage Chart in Treharris, Merthyr Tydfil County Borough, Wales 03/20/2026 23:45

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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 (17%)

    Total Blackout (17%)

  4. Wi-fi (3%)

    Wi-fi (3%)

  5. E-mail (2%)

    E-mail (2%)

  6. TV (%)

    TV (%)

Live Outage Map Near Treharris, Merthyr Tydfil County Borough, Wales

The most recent O2 outage reports came from the following cities: New Tredegar, Treharris, Cathays and Cardiff.

Loading map, please wait...
City Problem Type Report Time
United KingdomNew Tredegar Total Blackout
United KingdomTreharris Phone
United KingdomCardiff Phone
United KingdomCardiff Phone
United KingdomBridgend Phone
United KingdomBridgend Phone

Community Discussion

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O2 Issues Reports Near Treharris, Wales

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

  • 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!

  • 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

  • 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

  • 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! 🤬

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

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

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

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

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

    @O2 your live chat service is garbage. 15

  • 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 😔

  • 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.

  • 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.

  • 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.

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

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

  • 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

  • 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’

  • 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.

  • jamcole88 🇬🇧Jamie🏴󠁧󠁢󠁷󠁬󠁳󠁿 (@jamcole88) reported from Panteg, Wales

    Currently with @EE with no/very low signal at home address! Who wants to send me sim cards so I can see what network to change to! @O2 @o2 @ThreeUKSupport @VodafoneUK @ThreeUK

  • 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 🤯

  • 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:

  • RubenDogliani Ruben D (@RubenDogliani) reported

    @O2 please sort out your customer service chats and allow people to log in O2 to get our invoices. I’m not interested in signing up to virgin media. I have an o2 account

  • MelJD46 Mel D (@MelJD46) reported

    @O2 how can an offer be tailored for me when it consists of companies I loathe and detest? You are lying and the offer isnt a good one, try again..yes i know you cant reply because you are limited by the platform.... #fail

  • KevinBeckley7 Kevin Beckley (@KevinBeckley7) reported

    Only look to speak to @O2 about this issue, they are my provider and I need them to deal with the issue.

  • Inglorious77 Paul Lambert (@Inglorious77) reported

    @O2 I have a DD being taken from my account from yourselves i don't recognise, i don't have any accounts with O2 at present...Help??

  • MarinaJFleming7 Marina J. Fleming (@MarinaJFleming7) reported

    @O2 absolutely useless and even worse since joining with Virgin. Have refused to help or give guidance. I can't sign up for the new ID needed. So TV, mobile.and broadband will be going. Any other services viewing this, what can you for someone who has had 20 plus years with both.

  • silvercupra Richard Varney (@silvercupra) reported

    @JP_Galea @O2 Yes! As of yesterday when I loaded the o2 app I had to go through the the link to create a virginmedia account and link my o2 at this point it failed! To link not happy if #o2 don't fix this I will be leaving I may as well be with giffgaff at least I could view my account

  • GemSwanz Gem Swanson© (@GemSwanz) reported

    Why has my O2 signal been so poor for the last couple of months? It’s killing me? Been with you for ages and never had issues but I am struggling to get a signal when it’s showing 5G? @O2

  • tom1408 TomAJ65🏴󠁧󠁢󠁥󠁮󠁧󠁿🇬🇧🇮🇳🙏🏻🌺 (@tom1408) reported

    @O2 @VirginMediaO2 I would if I could sign in to my accounts, Ever since you merged I e had nothing but crap trying to log on, Think I'l terminate contracts after over 14 years and go elsewhere as nobody trys to help.

  • bostock_bentley LIΔM 🤦🏻‍♂️ (@bostock_bentley) reported

    @O2 Well that was a waste of time, spent 20 mins waiting in Westfield O2 store and they tell me they can't help me!

  • JP_Galea James Galea (@JP_Galea) reported

    @O2 login site has been down for over a month. Customer service keep on promising to fix it or call back. Not a single word from them. Anyone with same issue?