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 09/16/2025 11:35

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Most Reported Problems

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

  1. Phone (51%)

    Phone (51%)

  2. Internet (25%)

    Internet (25%)

  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 Treharris, Merthyr Tydfil County Borough, 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 KingdomBridgend E-mail
United KingdomCardiff Phone
United KingdomCardiff Internet

Community Discussion

Tips? Frustrations? Share them here. Useful comments include a description of the problem, city and postal code.

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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

  • 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.

  • 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

  • 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.

  • 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

  • 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’

  • 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 😔

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

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

  • 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.

  • 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.

  • 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! 🤬

  • 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

    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

  • 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

  • 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 🤯

  • 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

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

    @O2 your live chat service is garbage. 15

  • 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:

  • lolly_naomi Naomi-Kay (@lolly_naomi) reported

    @O2 I’m sorry this is not good enough I have zero signal whatsoever I can’t even call o2 because it doesn’t even ring this is disgusting can you confirm there is an issue and also when it will be resolved

  • ivan_ruggeri Hartfield (@ivan_ruggeri) reported

    Currently abroad and annoyed by crap service from @02. Chaotic telephone answering system that cuts u off. No messages sent to warn you are about to finish data. @02 #o2 @O2 definitely changing provider.

  • samantha192727 samantha wright (@samantha192727) reported

    @O2 Anyone having problems ringing out

  • TomREdwards Tom Edwards (@TomREdwards) reported

    @O2 Yes. It’s not that I can’t access your website, or any website. But it’s just coming up with an error trying to login

  • KieranBlake1994 Kieeeee (@KieranBlake1994) reported

    @O2 Keep getting no signal or 1 bar since this morning, can’t do anything. What’s going on?

  • LaurenSTompkins Lauren Tompkins (@LaurenSTompkins) reported

    Help @O2 my daughter bought a brand new oppo handset on the 27/07/21 and has gone travelling. The handset has stopped working won’t charge. What can she do?

  • kerzii_x 𝓚𝓮𝓻𝓻𝔂 𝓗𝓪𝓵𝓵 (@kerzii_x) reported

    @O2 Hey you guys having issues today? Trying to pay an overdue phone bill but myo2 wont load up and when i try to call it just disconnects.

  • NatalieMcCoy92 Natalie (@NatalieMcCoy92) reported

    Is Liverpool no longer covered by @O2 service. Everywhere I go phone just struggles to work!! 😩

  • latuaputtanaxo k :) (@latuaputtanaxo) reported

    omg ima actually throw my phone. to get any data I have to keep turning flight more on n off for 2 mins of data n then it goes. nah I actually hate o2 I wish I never upgraded with them @O2

  • MainPietra pietra main (@MainPietra) reported

    @O2 Ive been with O2 for 17 yrs and having the worst experience. They happily take my money for insurance but i have had a broken phone for 9 days as apparently my samsung is out of stock. They have offered to replace with a Motorola (not even another samsung, awful service!!).