O2

O2 Outage Report in Castlereagh, Northern Ireland

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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 Castlereagh, Northern Ireland

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

O2 Outage Chart in Castlereagh, Northern Ireland 11/08/2025 20:10

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Most Reported Problems

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

  1. Phone (46%)

    Phone (46%)

  2. Internet (30%)

    Internet (30%)

  3. Total Blackout (16%)

    Total Blackout (16%)

  4. Wi-fi (4%)

    Wi-fi (4%)

  5. E-mail (3%)

    E-mail (3%)

  6. TV (1%)

    TV (1%)

Live Outage Map Near Castlereagh, 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 Castlereagh, Northern Ireland

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

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

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

  • 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.

  • 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.

  • 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.

  • 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.

  • 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.

  • SWAshleigh Ashleigh Shaw (@SWAshleigh) reported from Ballygowan, Northern Ireland

    How do I make a complaint with @O2

  • 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 !

  • BrendanB2 Brendan Bonner (@BrendanB2) reported from Belfast, Northern Ireland

    @O2 I wouldn’t recommend anyone buying online and redeeming your phone. Go to the store, you can’t trust any of the online and virtual services. Was a handling getting phone set up, getting help and they only give you 50% of the value they say (no matter how good your phone is).

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

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

  • AskkeithInfo askkeith.info (@AskkeithInfo) reported from Castlereagh, Northern Ireland

    @O2 Reece in your forestside store was a legend I ran through door cut off from world and all sorted for phone and lap top in 12 mins a credit to public service he’ll be snapped up by someone soon give him a pay rise and pat on back

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

    @O2 AirPods and 🎅 is looking after them! Again fantastic service.

  • 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

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

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

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

    Great customer service @O2. Placed an online order at 6.30pm last night and arrived 4.45pm in Belfast.

  • columcoyle Colum Coyle (@columcoyle) reported from Castlereagh, Northern Ireland

    @angelcosta78 @DPDgroup_news @O2 @AppleSupport Just checked and its now saying the same for me! Apparently it takes a full 26 hours to get from Birmingham to Down 🙄

  • 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?

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

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

  • 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

  • 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👿

O2 Issues Reports

Latest outage, problems and issue reports in social media:

  • bluegaschris chris fear (@bluegaschris) reported

    @pollyesta73 @O2 Tbf I was with virgin before and never any real issues !and they were all ways easy to contact and get help! But they automatically switched me over to this joke outfit!

  • begbie86 jaysus lad (@begbie86) reported

    @O2 customer support for anything is absolutely shite. Such a poor poor service.

  • feesaysrelax Fee 🇬🇧🇯🇲⚖️ (@feesaysrelax) reported

    @NeilT_WYR @O2 I'm having this issue too, I just want to order my S23+ 😭

  • DannyCoombs95 Danny Michael Coombs (@DannyCoombs95) reported

    @NeilT_WYR @O2 @O2 I am also having the same problem

  • PaulLFC85 Paul (@PaulLFC85) reported

    @O2 12 hours later and I still can't pre order it because of your broken website

  • _JamesD27 James Davies (@_JamesD27) reported

    @O2 is there a technical issue with topping up currently please?

  • Anthony15665779 MCFCANT88 (@Anthony15665779) reported

    @CarolJo73512628 @O2 Having the same problem

  • drummerJoshG Josh Goring mstdn.social/@JGoring90 (@drummerJoshG) reported

    .@O2 why is the signal in my workplace area so diabolical? Not to mention the several miles surrounding the area. I have had messages from your customer support colleagues stating that it's because "the area can get a little busy" but it's currently 4:30 in the morning........

  • Tedsandtreasure Tedsandtreasures (@Tedsandtreasure) reported

    @O2 SO NOW YOU HAVE DISABLED BOTH MY PHONE NUMBERS SO I CANT CONTACT ANYONE OR O2 to sort this COMPLETE MESS out x disabled at least 5 hours ago just before I had been PROMISED a call back from o2 customer service !!!

  • feesaysrelax Fee 🇬🇧🇯🇲⚖️ (@feesaysrelax) reported

    @O2 still can't upgrade and preorder #GalaxyS23Plus because your system is down, and has been for three hours.