O2

O2 Outage Report in Mountain Ash, Rhondda Cynon Taf, Wales

Some problems detected

Users are reporting problems related to: phone, internet and total blackout.

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 Mountain Ash, Wales

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

O2 Outage Chart in Mountain Ash, Rhondda Cynon Taf, Wales 07/27/2025 07:05

July 27: Problems at O2

O2 is having issues since 08:20 AM GMT. Are you also affected? Leave a message in the comments section!

Most Reported Problems

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

  1. Phone (50%)

    Phone (50%)

  2. Internet (26%)

    Internet (26%)

  3. Total Blackout (15%)

    Total Blackout (15%)

  4. E-mail (4%)

    E-mail (4%)

  5. Wi-fi (4%)

    Wi-fi (4%)

  6. TV (1%)

    TV (1%)

Live Outage Map Near Mountain Ash, Rhondda Cynon Taf, Wales

The most recent O2 outage reports came from the following cities: Cardiff.

Loading map, please wait...
City Problem Type Report Time
United KingdomCardiff Phone
United KingdomCardiff Phone
United KingdomCardiff Phone
United KingdomCardiff Internet
United KingdomMountain Ash Phone
United KingdomPontyclun Phone

Community Discussion

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

Beware of "support numbers" or "recovery" accounts that might be posted below. Make sure to report and downvote those comments. Avoid posting your personal information.

O2 Issues Reports Near Mountain Ash, Wales

Latest outage, problems and issue reports in Mountain Ash and nearby locations:

  • 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? :-(

  • 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?

  • stuomac88 Stuart Maclean (@stuomac88) reported from Abertillery, Wales

    @O2 supposed to have had a bill credit applied to my account due to mast issues. Can you check this for me as still not showing on my o2?

  • 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.

  • 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...

  • 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

    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" 🙄😡

  • 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!

  • 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.

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

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

  • 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

  • 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

  • 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

    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

  • 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...

  • 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?

  • 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

  • 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?

O2 Issues Reports

Latest outage, problems and issue reports in social media:

  • step_hen111 Stephen (@step_hen111) reported

    @O2 I can't link my O2 account to the new VMO2 ID. I get a message saying "Sorry, we couldn't link your account due to an error". I called but they didn't understand. I can't access my online account. Can someone help?

  • so_akin Oğuzhan (@so_akin) reported

    @pascall21 @O2 Every year, worst service award goes to @O2

  • so_akin Oğuzhan (@so_akin) reported

    Heyy @O2 — I haven’t been able to use mobile internet, make calls, or send texts for 3 days. Are you planning to do something about this? I can’t see any explanation about the problem, maybe you don’t know but we have a big problem.

  • Quantum_android Rob (@Quantum_android) reported

    @O2 So, I'm trying to sign in to my o2 account to pay a bill for a product. Can't do that unless I sign up for ANOTHER account with VMO2. Can't sign up for VMO2 as I do not have an o2 phone number. Also can't link my virgin account as I don't have the account number.

  • ndrewskinner Andrew Skinner (@ndrewskinner) reported

    @virginmedia @O2 @DisneyPlus what a shambles. Can’t access O2 app to manage my Disney acct, VM no idea why, O2 say app is down as last week’s update to merge it with VM has gone wrong, so wait till it’s fixed. O2 can’t help either as their access is also down #itsm #customercomms

  • AlunOwen6 Alun Owen - (@AlunOwen6) reported

    @O2 your mobile service across the country is at best, patchy. Shocking considering how much you charge monthly customers

  • VenningBellasis Venning Bellasis (@VenningBellasis) reported

    @O2 I am not able to receive any text messages from anyone on the EE network. This is the second time it's happened. Is there anything you can do?

  • BlackburnJulian Julian Blackburn (@BlackburnJulian) reported

    @O2 what on earth have you done to your App. Absolutely useless since you are now virgin O2. Never had issues accessing the app but now being asked to verify my email address and can then not get in with the verification. Awful!!!! Ditch Virgin and go back to what you had!!!

  • siany321 Sian (@siany321) reported

    @O2 hi, I'm on a pay monthly contract with Europe included. My data isn't working in Croatia- can you help please ?

  • DHammy1971 DHammy1971 (@DHammy1971) reported

    @BedsGooner @virginmedia @O2 Feel your pain. Yesterday both my O2 and Virginmedia accounts were hacked. O2 were terrible and could have avoided lots of it from my first call, but almost ignored me then it got really bad, as people had access to my account.