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 03/04/2026 07:55

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Most Reported Problems

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

  1. Phone (50%)

    Phone (50%)

  2. Internet (31%)

    Internet (31%)

  3. Total Blackout (13%)

    Total Blackout (13%)

  4. E-mail (3%)

    E-mail (3%)

  5. Wi-fi (3%)

    Wi-fi (3%)

  6. TV (%)

    TV (%)

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

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

Loading map, please wait...
City Problem Type Report Time
United KingdomTreharris Phone
United KingdomCardiff Phone
United KingdomCardiff Phone
United KingdomBridgend Phone
United KingdomBridgend Phone
United KingdomPorth Phone

Community Discussion

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O2 Issues Reports Near Treharris, Wales

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

  • 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.

  • 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

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

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

  • 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

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

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

  • 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.

  • 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!

  • 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!!

  • BristolOli Bristol Oli (@BristolOli) reported from Cardiff, Wales

    @BS3Rob @O2 Glad it wasn’t just me - No signal anywhere near the ground

  • 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...

  • 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.

  • Daniel_Lyddon Daniel Lyddon (@Daniel_Lyddon) reported from Cardiff, Wales

    This weather properly has me over a barrel. Mistreatment by @O2 properly has me feeling down. My #CovidVaccine pain is bad. Some days the demons are just too much to battle...but today is not one of those days. Rest, relax, refocus. #MentalHealthMatters #BipolarDisorder

  • 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?

  • 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.

  • 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

  • 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.

  • 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

  • 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?

  • 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?

  • BristolOli Bristol Oli (@BristolOli) reported from Cardiff, Wales

    @BS3Rob @O2 @WBA Been horrendous for weeks - Can’t complete a call without having to call back numerous times - BS3 probably the worst of them all but M4 corridor from Cardiff to Bristol is a close second

O2 Issues Reports

Latest outage, problems and issue reports in social media:

  • Will6118 Will Callison (@Will6118) reported

    Oh well, looks like I’ll be leaving @EE when my contract is up, after 15 years + of loyal service and lots of money spent they have just informed me my bill is going up 14.4%… absolutely shocking. Time to shop around @VodafoneUK @O2 any others??

  • OliHepy Ollie Heptinstall (@OliHepy) reported

    Poor show from @o2 putting contract prices up by 17.3 per cent. #greed

  • tomdown1984 Thomas Down (@tomdown1984) reported

    @Ironssparky1985 @O2 Google profits they’ve made, totally dumbfounded and the rise is a joke. I’ll be getting out of my contract. Signal is **** as well

  • sjcarson1976 StevieKit (@sjcarson1976) reported

    @O2 17.3% forced annual price increase? This is an absolute joke. Are you staff getting a 17.3% increase? Are you going to provide a 17.3% improvement in service? Just ripping people off and driving inflation even further. You should be shut down by Ofcom

  • AndrewWolf88 Andrew Wolf (@AndrewWolf88) reported

    @MCFC_EW @GarethTurpin @O2 Bastards they are. I'm on my second complaint with them for bad signal. Tried blaming my phone last time but the missus EE sim card worked perfectly

  • Ironssparky1985 JP (@Ironssparky1985) reported

    @tomdown1984 @O2 Exactly the same thoughts mate , meant to call them today to cancel ! Absolute piss take !

  • kevbev321 Kevano (@kevbev321) reported

    All I wish to say to you @O2 is 🖕…. Rising my bill by nearly 19% is absolutely despicable. A crappy network with poor signal everywhere and even worse customer service, as soon as my contract is up I’m leaving you and never returning! Criminal behaviour @MartinSLewis

  • twotonemanc james collier (@twotonemanc) reported

    @Jmes_80 @SW689908 @O2 Sim only definitely the way forward. These phones haven't improved much for years anyway, just marketing bollocks. Need to just replace the battery and they're grand again. O2 network has gone to **** for sure...

  • realMattToomer Matt Toomer (@realMattToomer) reported

    There is currently a 45 minute wait on the @O2 Customer Service numbers, I can only presume that everybody is phoning up to cancel giving that O2 are increasing prices by 17%.

  • helpme96957119 helpme (@helpme96957119) reported

    @O2 even if the quality of your network rose with the same percentage as your prices each year, o2 still wouldn't be a good value network to be a customer of. I cannot wait to be out of contract so I can switch to another provider.