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 09/07/2025 14:50

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Most Reported Problems

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

  1. Phone (52%)

    Phone (52%)

  2. Internet (23%)

    Internet (23%)

  3. Total Blackout (16%)

    Total Blackout (16%)

  4. E-mail (4%)

    E-mail (4%)

  5. Wi-fi (4%)

    Wi-fi (4%)

  6. TV (1%)

    TV (1%)

Live Outage Map Near Castlereagh, Northern Ireland

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

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

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

    @TalkTalk No the @TalkTalk number was 03451720088 And @O2 give me 03451720091 The email number was 03451720032 No success at all very bad customer service so far !!!

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

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

  • Deadandgone70 Joel Ferguson (@Deadandgone70) reported from Newtownards, Northern Ireland

    Glad I’m leaving @O2. Trying to recycle my phone and according to CEX, TescoMobile and Game the small mark on my phone wouldn’t be a problem. But send my phone off and they say they’d give 50% of the value. Jokers like. Even in store they said it wouldn’t be a problem

  • 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

  • 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.

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

    @angelcosta78 @DPDgroup_news @O2 @AppleSupport I’ve sent a complaint to O2 asking for a refund of the three days I’m missing out on my device plan. They’ve already charged me!

  • cimota Matt Johnston (@cimota) reported from Lisburn, Northern Ireland

    @O2 Which was apparent from my first tweet. I’m not asking for you to intervene. I was asking when are you going to develop some principles and stop selling your customers details to bad players like @Aerial_Direct

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

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

  • Utter_Dil_Emma Mad Madame Em (@Utter_Dil_Emma) reported from Belfast, Northern Ireland

    I assume my bus home crashed and I died because hell is surely dealing with @O2 customer service chat for a ******* hour and a half.

  • 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.

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

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

  • Jay_McB Jason Brown (@Jay_McB) reported from Newtownabbey, Northern Ireland

    @virginmedia come on I have 4 Sims with VM. Even put something together online. Will @virgin customers be getting any rewards or paybacks like @O2 had to do when they kept getting network problems 😜

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

    How do I make a complaint with @O2

  • 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).

  • 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 🙄

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

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

  • cimota Matt Johnston (@cimota) reported from Lisburn, Northern Ireland

    @Aerial_Direct @O2 I’ve spoken to Naomi on your team already. That’s was a useless ten minutes. Refused to tell me details of how to cancel - just threatened temrination fees. Offered renewal. Honestly she would have had to have offered a unicorn in a colour of my choice to get a renewal.

  • leannereid1988 leane reid (@leannereid1988) reported from Castlereagh, Northern Ireland

    @O2 in o2 shop in newtownards the 3 fellas in the shop couldn't have bin any nicer and very helpful even when the problem was my own fault! Saved me a trip to Samsung! Def need a pay rise!! Thank you =)

  • 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.

  • EmGymMum Em (@EmGymMum) reported from Belfast, Northern Ireland

    @O2 @KLogan1977 Update: So @O2 asked me to DM details of the issue. I sent it hours ago, yet still no response. I wonder if there is an intention to help or it is an illusion of good customer service. Nor have I got promised call back after 22 hours from the CS phoneline. Not good!!

O2 Issues Reports

Latest outage, problems and issue reports in social media:

  • MissWittank Rock Lobster (@MissWittank) reported

    @Rozrunsabit @tjd19 @O2 I think their service has gone downhill since they merged with Virgin. Also I don't get a phone signal, let alone a data signal, for nearly half of my journey to work now.

  • Rozrunsabit RO$ (@Rozrunsabit) reported

    @MissWittank @tjd19 @O2 We found only way to sever a Vodafone contract was to cancel the direct debit as husband couldn’t get through on phone or internet & shops don’t deal with such trivia. Absolutely ridiculous! 😡

  • STUB74294685 STUB (@STUB74294685) reported

    @O2 Check account - YES Sim - Replaced it Sim in Store Managers phone - YES still no data. Store manager sent me on my way there was nothing more he could do, none of the store team had O2 mobiles. This is not a local issue, full 4G bars no data Midlands and North Wales same issue!

  • STUB74294685 STUB (@STUB74294685) reported

    @O2 O2 store manager tried new Sim, which didn't work, he then put my new Sim I to his phone, that didn't work. No wonder the O2 shop manager has a Vodafone sim? He check the O2 coverage said it didn't mention outages, finally there was nothing he could do. Your network is dead!

  • AlexMurdoch02 Alex Murdoch (@AlexMurdoch02) reported

    @O2 my odeon o2 priority code is not working

  • InvestorHex HEXInvestor 🐢 | 5555 Club | Maximus (@InvestorHex) reported

    @O2 Your 4G has gone to **** sorry think I’m going to jump ship to @VodafoneUK

  • pixiefan_123 Annalise 🦔 (@pixiefan_123) reported

    @NicholsMarkl @O2 So true. They've still not DM'd me back...I've had CS team laughing down the phone and all sorts.

  • fredyates2 Fred Yates (@fredyates2) reported

    @O2 I need help you're winding me up you keep asking me for money to pay for my monthly SIM but it's paid by direct debit. I have tried phoning customer services but because I am unsure of my password which was set up years ago they WON'T help and say go the o2shop I'm disabled.

  • tjd19 Timandra Dyer (@tjd19) reported

    @MissWittank @Rozrunsabit @O2 They should compensate you for ZERO service! 😠

  • cfitz2201 Conor Fitzpatrick (@cfitz2201) reported

    How is it in this day and age that there are still places that don’t get a phone signal? @O2 @EE @BT what’s the story like?