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.

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 11/17/2025 02:05

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Most Reported Problems

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

  1. Phone (45%)

    Phone (45%)

  2. Internet (31%)

    Internet (31%)

  3. Total Blackout (16%)

    Total Blackout (16%)

  4. Wi-fi (3%)

    Wi-fi (3%)

  5. E-mail (3%)

    E-mail (3%)

  6. TV (1%)

    TV (1%)

Live Outage Map Near Belfast, Northern Ireland

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

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

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

  • thebaldfather Hugh Pollock (@thebaldfather) reported from Belfast, Northern Ireland

    @O2 I am amazed by the lack of support from your network. Trying for a week now to get help and your help and advice is pathetic when you eventually answer.

  • 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 👇

  • 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

  • apallan ANN P V ALLAN (@apallan) reported from Belfast, Northern Ireland

    @Girlzmum Very poor service from @O2 especially to a front line worker in the NHS #NHS who needs her phone.

  • 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.

  • 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

  • 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 !

  • gareth_thmpsn Gareth Thompson (@gareth_thmpsn) reported from Belfast, Northern Ireland

    @O2 you guys got a number to your payments team? I need to speak to someone. Automated IVR is poor.

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

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

  • 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👿

  • kkanecelt kierankane (@kkanecelt) reported from Belfast, Northern Ireland

    @o2 is the worst shittiest network I've ever been on in my life

  • salexander835 Stuart A (@salexander835) reported from Holywood, Northern Ireland

    @O2 I can't get logged into my account through the app or via the Web. Is there an issue?

  • 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.

  • StephenScarth Stephen Scarth (@StephenScarth) reported from Bangor, Northern Ireland

    @O2 Hi having problems making and receiving phone calls on a IPhone SE #O2

  • UberGeekFanboy Fanboy (@UberGeekFanboy) reported from Belfast, Northern Ireland

    @O2 trying to phone through to return a phone and keep getting cut off? Wtf.

  • McGuinnessKevin Kevin McGuinness (@McGuinnessKevin) reported from Belfast, Northern Ireland

    @o2 any chance you can sort out the masts in Belfast.. really slow connections and dropped connections, I’m even with o2 (was with you when it was BT Cellnet) I’m with sky who use your network but I know of o2 customers having the same issues. #o2network

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

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

  • 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

  • billyjatkins billy (@billyjatkins) reported from Belfast, Northern Ireland

    @seanp280 @O2 Where are you in Belfast? I live beside city hospital and I get full bars all over the city, 5G too! Only when I venture into the depths of County Down does it deteriorate lol

  • 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:

  • AndyOnTheKop 𝒜𝓃𝒹𝓎  🇬🇧 🇺🇦 (@AndyOnTheKop) reported

    @O2 hi do you support RCS on iPhone

  • pagneonpluto 876 🇯🇲 (@pagneonpluto) reported

    @tj_pyle @EE @O2 How’s your service with o2?

  • Petersm34535768 Peter smith (@Petersm34535768) reported

    @O2 Hi could you help me please on my phone accounts I’ve always had staff discount since I’ve retired but it now seems not to be available anymore. I believe this was a part of my retirement package

  • Cliff7474 Anthony (@Cliff7474) reported

    @O2 That’s not really going to fix the mast problem- EH5 1GG

  • LYCOICAT Mila (@LYCOICAT) reported

    @O2 your app, website and phone and chat have been down all day. I can’t make my manual payment. Sort it out. Your network is also still down. I want to be compensated fairly and not let down by you. It’s terrible and you’ve not given any care

  • mre6243 MR Entertainments (@mre6243) reported

    Gerry @O2 Belfast. After being passed around the world - Philippines, India, South Africa - hours on calls since last Thursday with no-one making good on promises to fix the issue and return calls, finally problem solved! Deserves a bonus.

  • JoeMartin73 JM (@JoeMartin73) reported

    @EnglandRugby @USARugby @O2 Poor Ted Hill still can’t get a start! Utterly ludicrous! What more does he have to do ? Seriously!

  • LYCOICAT Mila (@LYCOICAT) reported

    @O2 I’ve paid online now but I’m absolutely livid still giving network issues 3 weeks on. I’ve not heard back from your “resolution” teams.

  • steveps83 steveps83 (@steveps83) reported

    I swear if your on @o2 and live in paddock wood Kent the re option is a bag of ****. I'd get better reception in Ukraine with the war going off.

  • Jmrplus4Jane Jane Beesley (@Jmrplus4Jane) reported

    @O2 I want to pay my bill and can't get onto my account when I put email in it says pass key not verified then asking for the 5 random words I put those in it doesn't work so frustrating why have you changed old log in never had an issue with that this does not work