O2

O2 Outage Report in Tongwynlais, Cardiff, 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 Tongwynlais, Wales

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

O2 Outage Chart in Tongwynlais, Cardiff, Wales 03/01/2026 15:35

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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 (30%)

    Internet (30%)

  3. Total Blackout (13%)

    Total Blackout (13%)

  4. E-mail (4%)

    E-mail (4%)

  5. Wi-fi (3%)

    Wi-fi (3%)

  6. TV (%)

    TV (%)

Live Outage Map Near Tongwynlais, Cardiff, Wales

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

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

Community Discussion

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O2 Issues Reports Near Tongwynlais, Wales

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

  • ChrisEddy_7 Eddy 🏴󠁧󠁢󠁷󠁬󠁳󠁿 (@ChrisEddy_7) reported from Cardiff, Wales

    It’s come to something when you can get 4 bars of 4G signal walking between Benidorm and Albir in Spain but can’t even get 3 bars of 3G signal in Cwmbran South Wales 👀 @o2

  • davesouthphoto Dave South (@davesouthphoto) reported from Cardiff, Wales

    If I had a £1 for eveytime @O2 text me about my local mast being down. I wouldn't have to pay for my contract anymore. Wearing thin now guys.... 🙄

  • BigDogWrestler Super Blue Eye Dog (@BigDogWrestler) reported from Cardiff, Wales

    How can @O2 sponsor the World's most popular concert venue as in @TheO2 but can't give me a decent signal for 50% of my day?

  • divyaparikh_ Divya (@divyaparikh_) reported from Cardiff, Wales

    @O2 Thanks for all the help @O2! Just got a call saying matter has been resolved.

  • BigDogWrestler 🌈 Champ (@BigDogWrestler) reported from Cwmbran Central, Wales

    @O2 why is my signal often very poor and I mean often and very very poor?

  • sarlpar Sarah (@sarlpar) reported from Henllys, Wales

    @O2 It’s been going on for months, I have friends dotted around NP44 and they all struggle making phone calls as they keep dropping out, it’s not something new it’s an ongoing issue. I’d change if I wasn’t tied in and I think you’ll find other would too if they could. So frustrating

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

    30 mins on hold to @O2 customer services, spoke to an agent who has now put me on hold to speak to transfer me to #CustomerServices...so God knows who the hell I got through to 🙄😡 #FirstWorldProblems

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

    If it wasn't for all the free benefits I got with @O2 Priority, I'd ditch them. Their #CustomerService is abysmal. It's like being in some weird kind of abusive relationship: "we'll treat you like **** but give you lots of free stuff so you'll want to stay with us" 🙄😡

  • Shaunalj93 Shaunalj (@Shaunalj93) reported from Ferndale, Wales

    I need some help @O2. I was told I can get o2 open as I have a @bluelightcard but when I’m trying to register it online it is not accepting my device.

  • CharlBalcombe Charlie Balcombe (@CharlBalcombe) reported from Cardiff, Wales

    @O2 hello! I forgot to put my UNiDAYS on when purchasing my new phone contract and I’m struggling to add it on after, is it possible you could help me with that please? :-(

  • Taxiboi3583 Adam Smith #BlackLivesMatter (@Taxiboi3583) reported from Beechwood, Wales

    @O2 Totally ignored my actual question, do I get a rebate on my bill if I experience technical issues?

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

    (1/4) Not a week after I was horrifically abused by an @o2 #CustomerServices agent, and even after I settled the payment issue (ongoing problems with #O2 automated systems since last Aug/Sep) that very day, I have today received three consecutive threatening/#legal letters...

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

    (4/4) ...as being the fault of an automated system, without any recompense or any attempt to suggest that they can improve, is horrifying. I feel almost constantly threatened, intimidated, and abused by @O2 due to an issue that they caused, and they are making no attempt to fix.

  • uncriticalsimon Simon 💉💉💉🐉 (@uncriticalsimon) reported from Newport, Wales

    @jasonmackenzie @O2 OK I once had trouble with EE (not for the mobile service but when I switched to broadband), it got so bad that I decided to go back to Sky. (NB now with TalkTalk, also not great for customer service but OK if nothing goes wrong.)

  • Lea_May_ Lea French (@Lea_May_) reported from Cardiff, Wales

    @O2 don't recommend upgrading with o2. Terrible service, can't speak to anyone on the phone and waited for over a week for my delivery that was due on Monday!

  • cymboi MH 🏴󠁧󠁢󠁷󠁬󠁳󠁿🏳️‍🌈🇪🇺 #yescymru (@cymboi) reported from Victoria, Wales

    @O2 How is that great value for a customer, when a sim only package is £30, yet its £35 when you purchase it with a phone?

  • sarlpar Sarah (@sarlpar) reported from Henllys, Wales

    @O2 your coverage in the Cwmbran area NP44 is shocking, no end of people on O2 post about the poor signal especially around the Llanyrafon and Henllys/TyCanol area. When we ask about if there are any signal issues we’re told there’s not, Vodafone, EE and 3 work prefect. 😖

  • SamHallWales Sam Hall 🏴󠁧󠁢󠁷󠁬󠁳󠁿🐾🐾🌈 (@SamHallWales) reported from Cwmbran Central, Wales

    This Christmas, @O2 is donating data to those who need it. For every tweet using #O2DataPledge this Giving Tuesday, they'll donate even more data to the National Databank. Tap below to tweet your support 👇

  • acdavies67 anthony davies 🇾🇪🔰🏴󠁧󠁢󠁷󠁬󠁳󠁿🇺🇦 (@acdavies67) reported from Barry, Wales

    Well I've gotta be honest,never again will I take another phone contract out with @O2,wherever I go in a 50 mile radius of my home,my signal is **** and they called me last week offering me more data,more data ?,*******, i can't get anywhere near my data limit now ffs 😡😡😡😡

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

    (2/4) ...from @o2 dated TWO DAYS after the issue was, I was told, cleared up. A call to #O2 #AccessForYou this afternoon shows the issue is cleared up and the letters are auto-generated because payments can take up to 48hrs to register with O2...

O2 Issues Reports

Latest outage, problems and issue reports in social media:

  • join4te Jay (@join4te) reported

    @O2 Day 22 of 365 on trying to get O2 to fix their phone customer service. 1) If you ring and ask for an e-sim for an Apple Watch then good luck with that. Staff seem very untrained. 2) Calls disconnect too much when speaking on 202. 3) The whole IVR system feels dated.

  • iamRaeSkye Valedictorian 📚👨🏾‍🎓 (@iamRaeSkye) reported

    @O2 I’ve been trying to contact you guys about my phone by calling but no one picks up, I’m being charged more for my device than what was agreed on…I’m not happy and hope someone can get back to me with this issue

  • mmcandrew12 Maureen McAndrew (@mmcandrew12) reported

    @EE @O2 So having been happy with O2 I find to upgrade my phone They put me to EE. After a nightmare of transition I find EE transmitter problems are common with a fix by within 16hours and yet I get ‘excellent coverage’ - conned

  • InventOneCalm Viniam (@InventOneCalm) reported

    @SkyHelpTeam Thank you Jason for responding. I was moving to @O2 because you wouldn't offer me a decent offer and you don't give any rewards. O2 were offering both of those but have messed my new contract. Neither of you give a good signal. I don't know what to do.

  • stokiemummyJ stokiemummie (@stokiemummyJ) reported from Stoke-on-Trent, England

    @O2 hi, just recently my phone 4 g has been losing signal, used to be fine, annoyed recently has 4 g just went resulting in losing bid on eBay, ?

  • kristen_brenes Kristen Brenes (@kristen_brenes) reported

    I had got with my new contract from @O2 because the battery life is extremely poor, and I wanted to use the switch up plan, that I pay for. I pre-ordered a new phone more than a month in advance because I was leaving the country for 5 weeks.

  • Kme27 Miss Easter 🐰 (@Kme27) reported

    @O2 Hello any chance you can sort out the mast that has died again, can't make or receive calls or send or receive txts?? Literally had no signal for 3 days in Tiptree now..

  • kristen_brenes Kristen Brenes (@kristen_brenes) reported

    I literally never use my Twitter account, but I feel like I have to let other people know about the legit god AWFUL customer service from @O2 I opened a new contract with them at the end of October, and it has been nothing but an absolute

  • ralstoncsc ALDO🍀1888Ralstoncsc (@ralstoncsc) reported

    @PaulGall67 @O2 Vodafone has been dogshit recently aswell and a know was was down for a bit the other day

  • jakey011 Danny Jakeman (@jakey011) reported

    @davidfromirl @O2 Getting picked up Monday, door to door replacement. @O2 still haven’t acknowledged this tweet. Guess there customer service skills are as good as phone grading.