O2

O2 Outage Report in Belfast, Northern Ireland

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The latest reports from users having issues in Belfast come from postal codes BT9 and BT12.

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 Belfast, Northern Ireland

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

O2 Outage Chart in Belfast, Northern Ireland 11/29/2025 03:45

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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 (17%)

    Total Blackout (17%)

  4. Wi-fi (3%)

    Wi-fi (3%)

  5. E-mail (2%)

    E-mail (2%)

  6. TV (1%)

    TV (1%)

Live Outage Map Near Belfast, Northern Ireland

The most recent O2 outage reports came from the following cities: Belfast, Carrickfergus and Lisburn.

Loading map, please wait...
City Problem Type Report Time
United KingdomBelfast Phone
United KingdomCarrickfergus Phone
United KingdomBelfast Phone
United KingdomBelfast Internet
United KingdomLisburn Phone
United KingdomCarrickfergus Total Blackout

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 Belfast, Northern Ireland

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

  • TheRealJackieJ Jackie Johnston (@TheRealJackieJ) reported from Castlereagh, Northern Ireland

    @O2 Thanks. How do we unsubscribe from this ****? We pay for 5 contracts and do not wish to receive these messages particularly on children’s phones.

  • roryg2009 Rory Gallagher (@roryg2009) reported from Belfast, Northern Ireland

    @o2 I resorted to emailing the CEO today @LutzSchueler because no one will help me with refunding me for an order I cancelled and didn't receive...

  • Watsonmydear Christine #StaySafe #SaveLives Watson 💙 (@Watsonmydear) reported from Belfast, Northern Ireland

    💡 check your Tesco clubcard account - vouchers for restaurants, Denby dining sets & more - I’ve enjoyed 3 course meals for 2 for like £1.13! 💡 check your topcashback account could be £££ for a M&S voucher for example 💡 If @O2 customer make sure you download free priority app

  • DAVIDBUZZ2904 DAVIDBUZZ2904 (@DAVIDBUZZ2904) reported from Lisburn, Northern Ireland

    @O2 Hi my gran is an elderly customer of 02 and keeps getting calls from 02 and has said many times not to ring her again and you keep doing so I want an explanation !

  • GeorgeCowan Britishgamerni 🇬🇧🏳️‍🌈 (@GeorgeCowan) reported from Newtownards, Northern Ireland

    @O2 Yeah that doesn’t give any way to report an issue or anything not helpful

  • GarethAJMiller Gareth (@GarethAJMiller) reported from Belfast, Northern Ireland

    @O2 how can I get in touch about my last bill? Recently left o2 so not letting me start a live chat as I can’t login

  • DAVIDBUZZ2904 DAVIDBUZZ2904 (@DAVIDBUZZ2904) reported from Lisburn, Northern Ireland

    @O2 @druwakely I’ve never got an @O2 treat they charged an elderly customer my gran over £200 on pay as you go for a month

  • PcConlon P Conlon PC (@PcConlon) reported from Belfast, Northern Ireland

    @DPDgroup_news @O2 your service is a joke

  • TheRealJackieJ Jackie Johnston (@TheRealJackieJ) reported from Belfast, Northern Ireland

    @O2 Hi. Can someone help me please? Tried ringing but losing the will with the wait times. Basically placed 3 orders yesterday. 2 have been despatched but 1 hasnt - ms-221212349. Can someone check whats happening?

  • timjacko09 timjacko09 (@timjacko09) reported from Ballygowan, Northern Ireland

    @O2 I’m having problems sorting out the “extra” that came with my recent upgrade. Today is day 28, I need to choose today. Please help asap!

  • Watsonmydear Christine #StaySafe #SaveLives Watson 💙 (@Watsonmydear) reported from Belfast, Northern Ireland

    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 👇

  • liznangel3 Liz Cullinane (@liznangel3) reported from Balmoral, Northern Ireland

    @EmmandJDeSouza Burnfoot, Donegal house in Derry UK Workshop Donegal, Irl @O2 flicking from roaming to home constantly, useless turning it off roaming I'd never get any work done👿

  • JeremyAdamsNI Jeremy Adams (@JeremyAdamsNI) reported from Belfast, Northern Ireland

    Kudos to @O2 for customer service today. Recommend going via app ‘Start a Conversation’ section.

  • DAVIDBUZZ2904 DAVIDBUZZ2904 (@DAVIDBUZZ2904) reported from Lisburn, Northern Ireland

    @O2 Hi I’ve switched my gran switched from pay as you go to pay monthly and her phone number still hasn’t switched can someone help

  • IanRobinson Ian Robinson (@IanRobinson) reported from Stormont, Northern Ireland

    @chriswb @O2 No. Plus it says No Service where the O2 logo should be. I might try the SIM in my O2 iPhone.

  • internetsense Philip I Wilson (@internetsense) reported from Belfast, Northern Ireland

    @LauraJ2803 @SarahSherry1 @O2 This is criminal activity I was charged £2 per day by #Three Which is bad enough Truth is like petrol/oil/electric/tv you can't change as they're all at it!

  • padraigmc1988 padraig mc crory (@padraigmc1988) reported from Belfast, Northern Ireland

    Is it just me or has @O2 phone signal went to the absolute dogs?

  • GeorgeCowan Britishgamerni 🇬🇧🏳️‍🌈 (@GeorgeCowan) reported from Whitehead, Northern Ireland

    @Jewkneeor @O2 @VodafoneUK Honestly terrible service here I think it’ll be EE or 3 from the look of it when I go to change provider at the end of my contract

  • catherine271076 Catherine Dwyer (@catherine271076) reported from Jordanstown, Northern Ireland

    @O2 I need to escalate a complaint re. a member of staff who refuses to to 1) process my upgrade and 2) who has just terminated my call. Who can I talk to? Your staff say it’s not possible to talk to a manager.

  • RunRosyRyanRun Bacon From Heaven (@RunRosyRyanRun) reported from Belfast, Northern Ireland

    @O2 I won an instant prize from Greggs but no voucher appeared, can you help?

O2 Issues Reports

Latest outage, problems and issue reports in social media:

  • Bastythegreat Perry Watts (@Bastythegreat) reported

    @FelicityCloake @O2 I had this a couple of years ago, good credit and everything just flat refusal to give me a contract! Tried with 3 and was no issue, no explanation at all...I joined o2 in December and nothing had changed but all went through fine this time!

  • FelicityCloake Felicity Cloake (@FelicityCloake) reported

    @palfreyman1414 @O2 I did it initially online three weeks ago, and they cancelled the order and told me their customer service team would be in touch (they weren't) - having cancelled my current contract, I then resorted to ringing them, to discover they won't take me on

  • xLucyfx xLucyfx (@xLucyfx) reported

    @O2 Hi, I'm not longer a customer with you but I've recently had an email to say you owe me a refund and to provide you with my details. Is this safe and genuine please?

  • NadzChaudhry1 Nadz Chaudhry (@NadzChaudhry1) reported

    I can’t believe how bad O2’s customer service has got over the years, once upon a time o2 used to be good @O2. I’m left with no network since yesterday due to the customer service’s stupid fault.

  • palfreyman1414 Ravi Nair #FBPE #PerfectPorkPie #JohnsonOut#FBPPR (@palfreyman1414) reported

    @FelicityCloake @O2 ****.

  • MrHaseebM Haseeb (@MrHaseebM) reported

    Hi @O2 I'm having problems with my new PAYG SIM. Not getting the double data or free credit after topping up

  • Peteish Name cannot be blank (@Peteish) reported

    @FelicityCloake @O2 Worked in a very good call centre which had pretty good customer service. We'd try to get back to the customer every few minutes if they were on hold. Just to apologise for the wait and if they're happy to keep holding while we looked into their issue.

  • That_Sim Simon John Grant (@That_Sim) reported

    Would appreciate if the signal for @O2 would stop going down every other week in Maidstone. The fact that my phone bill has jumped silly amounts means that I should be given a decent signal in return at the least…You’re close to losing another customer here.

  • FelicityCloake Felicity Cloake (@FelicityCloake) reported

    Trying to switch mobile provider, but just discovered from a (v nice customer service rep) that @O2 don't want to take me on as a customer - he can't explain it. Anyone else had this? (Am solvent, never missed a payment to current provider in 20 years etc, so bit perplexed)

  • AMP86793444 Cricketologist (@AMP86793444) reported

    @FelicityCloake @O2 Never heard of anything like this. Can they actually refuse? If so, on what grounds?