O2

O2 Outage Report in Treharris, Merthyr Tydfil County Borough, 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 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 12/12/2025 22:35

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Most Reported Problems

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

  1. Phone (47%)

    Phone (47%)

  2. Internet (30%)

    Internet (30%)

  3. Total Blackout (16%)

    Total Blackout (16%)

  4. E-mail (3%)

    E-mail (3%)

  5. Wi-fi (3%)

    Wi-fi (3%)

  6. TV (1%)

    TV (1%)

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

The most recent O2 outage reports came from the following cities: Bridgend and Porth.

Loading map, please wait...
City Problem Type Report Time
United KingdomBridgend Phone
United KingdomPorth Phone
United KingdomAbertillery Phone
United KingdomCardiff Phone
United KingdomBlackwood Total Blackout
United KingdomCardiff Phone

Community Discussion

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O2 Issues Reports Near Treharris, Wales

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

  • 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 😔

  • catlady_cez Cez 🏴󠁧󠁢󠁷󠁬󠁳󠁿 (@catlady_cez) reported from Cardiff, Wales

    @O2 hi is there an issue with your network in cf14? Havent been able to get 3g or 4g since yesterday?

  • 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.

  • gareth_thmpsn Gareth Thompson (@gareth_thmpsn) reported from Cardiff, Wales

    @O2 There’s delay then there’s rude. Been 92 working days or 128 days since I complained. @o2 are making it deliberately difficult to contact.

  • JaeyKelly Jay Kelly (@JaeyKelly) reported from Bridgend, Wales

    @O2 Are there any networks issues in South Wales? For the past week or so my phone signal reverts to 3G.

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

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

  • ImogensMind 👑Immy👑 (@ImogensMind) reported from Blackwood, Wales

    @O2 my friends phone network has completely gone down all day, they can’t call anyone including yourselves. Please suggest what they should do?

  • 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?

  • 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...

  • 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.

  • 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

    @O2 @Gropinvillain In all these years I’ve been with @O2 I’ve never ever had nothing for bro g a loyal customer, maybe it’s time I cha he networks after my contract is finished!!

  • 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

  • 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

  • gareth_thmpsn Gareth Thompson (@gareth_thmpsn) reported from Cardiff, Wales

    @O2 guys is there a backlog in complaints? I responded to a complaint on the 06/10/20 no reply, 20/11/20 no reply. I’ve now sent a further email today and I’ve no faith in it being responded to. Original complaint was 04/09/20.

  • 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!

  • DennerSusan susan denner (@DennerSusan) reported from Cardiff, Wales

    @O2 Customer service shocking! No service on phone since 24th May, SIX calls made to your call centre to resolve issue - now being told to wait for

  • gareth_thmpsn Gareth Thompson (@gareth_thmpsn) reported from Cardiff, Wales

    What is the point of complaining to @o2? Complaint sent 06/09 multiple times chased up formally 20/11 no reply now 06/0/21. Told someone looking at as a priority still nothing @MarkEvansO2

  • Hayeley Hayley (@Hayeley) reported from Cwmbran Central, Wales

    @O2 is there an option to setup a direct debit without making a phone call? It used to be set up but for some reason didn't change when I used the Switch service to move banks and I'm fed up of being told I'm behind on a payment. Can I do it via the app? Thanks

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

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

O2 Issues Reports

Latest outage, problems and issue reports in social media:

  • KaraHealthSci Kara Mackenzie (@KaraHealthSci) reported

    @virginmedia I realised that, however, if I cancel the @O2 Sim card I was told that I would not get a better deal...also cannot get through verification with o2 to cancel. Very annoyed...had to renegotiate my contract with you guys twice in the last month as it is!

  • ayounguk Andrew Young (@ayounguk) reported

    Hey @CampBestival #CampBestivalShropshire could you have a word with @EE for next year as their mobile coverage was virtually non-existent. My friends on @O2 had no problem staying in touch with their friends, and more importantly their kids.

  • Stevemcka steven mckaveney (@Stevemcka) reported

    @O2 what an absolute disgrace . Terrible service. No replies to Dm. Back office and mgr must be on holiday as no contact despite 15 escalations since last Thursday

  • Lava087 Simon (@Lava087) reported

    @O2 signal in New Ollerton NG22 is really bad! I’ve only picked up signal as I’ve left. What’s going on with your network lately? It’s a nightmare!!

  • 1983Choice Steven Boyle (@1983Choice) reported

    Thanks @O2 .... For having moorcroft recovery harass me over £40. Don't you remember I'd couldnt give you the damn money! I tried online, over the phone and in store. Bloody redicilous!!!

  • TechnicallyBen Ben Weinberger (@TechnicallyBen) reported

    Which mobile network in the UK has the most appalling customer service and why is it @O2? I've spent the past 7 days, back and forth via their app, trying to explain that their roaming was non-existent in Connecticut. Literally nil. None. They don't get it.

  • frantomlinson92 Francesca Tomlinson (@frantomlinson92) reported

    @O2 It says We couldn’t process your payment Sorry, it’s not been possible to take your payment. Your phone has not been topped up. Please try again or use another card. If the problem continues you’ll need to contact your bank.

  • Stevemcka steven mckaveney (@Stevemcka) reported

    @O2 shocking service by O2 Tried to pod my new number on Thursday morning. Still waiting despite calling over ten times to be told it’s in hand. o2 told me to DM them which I did. Obviously no return. Avoid at all costs

  • corgicorri Corgi (@corgicorri) reported

    @o2 Please help. Waited for wages to go in so that I can pay off my old device plan to upgrade. My old phone is at the bottom of a lake. Just when I was about to pay, it said I had to enter a code sent to my phone to verify my a/c. But I signed in. How can I buy new phone?

  • andrew_saval Andrew Ferguson (@andrew_saval) reported

    @JackEd84283152 @Techusiast Still no sign. I’ve no idea why @O2 are so slow