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 03/29/2026 22:40

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Most Reported Problems

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

  1. Phone (42%)

    Phone (42%)

  2. Internet (31%)

    Internet (31%)

  3. Total Blackout (22%)

    Total Blackout (22%)

  4. Wi-fi (3%)

    Wi-fi (3%)

  5. E-mail (2%)

    E-mail (2%)

  6. TV (%)

    TV (%)

Live Outage Map Near Castlereagh, Northern Ireland

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

Loading map, please wait...
City Problem Type Report Time
United KingdomBallynahinch Internet
United KingdomBelfast Internet
United KingdomCarrickfergus Internet
United KingdomCarrickfergus Internet
United KingdomCarrickfergus 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:

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

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

  • 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

  • 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!!

  • 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.

  • 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

  • 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.

  • 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 =)

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

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

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

    How do I make a complaint with @O2

  • 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

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

  • 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?

  • 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 🙄

  • 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!

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

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

  • 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

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

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

  • 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 😜

  • 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.

O2 Issues Reports

Latest outage, problems and issue reports in social media:

  • tobybmth Toby 🇪🇺 🇬🇧 🏴󠁧󠁢󠁥󠁮󠁧󠁿 🏳️‍🌈 (@tobybmth) reported

    @NadineDorries @virginmedia @O2 European Union roaming is a regulation not a law so it is upto member state to decide on it. So clearly UK failed to put this regulation on network operators so jumping on to say that EU didn't agree is a lie. Anyway you claimed channel 4 is public funded so not surprised..

  • AssetVigilante Asset Vigilante🏴󠁧󠁢󠁥󠁮󠁧󠁿🦓 (@AssetVigilante) reported

    @BorisJohnson @virginmedia @O2 We can't get into Europe you idiot!

  • Bagger2b Robert McPhee (@Bagger2b) reported

    How long will @O2 network be down in west Chelmsford

  • Paulypies Paul (@Paulypies) reported

    @O2 I live in an area where Virgin is unavailable (as do many), so am I right that there’s no way to get the Volt double data on my O2 Sim? If so, that seems like a not-cool way to subject customer to a post code lottery to receive a higher service on mobile service.

  • Timbabaland1888 Tim Land (@Timbabaland1888) reported

    @NadineDorries @virginmedia @O2 You stupid ****. How are you this stupid?

  • Plus_haut Carl J (@Plus_haut) reported

    @NadineDorries @virginmedia @O2 Oh Nadine, the European Commission rejected this, because to accept it would be illegal, due to jurisdictional issues. Do try to keep up.

  • hickey_mm Matthew Hickey (@hickey_mm) reported

    @NadineDorries @virginmedia @O2 Crap! EU has no juridication in third countries. Business in the UK can apply roaming if they choose to. Tweet is deliberately misleading.

  • RachaelS16 Rachael S (@RachaelS16) reported from Strathaven, Scotland

    @O2 I need help with two phones saying SIM not provisioned and can't find live chat on 02 app

  • ca1haT Helen Thorpe (@ca1haT) reported

    Shout out to Connor who works @O2 shop on Fargate, #Sheffield. Helped my mum to sort out her phone transfer from @virginmedia (as she couldn't get through to them). Super service, thank you!

  • ehgtfcexile clapclapfish #fbpe ⚫️⚪️🇪🇺 🇮🇹 🇬🇧 #gtfc (@ehgtfcexile) reported

    @NadineDorries @virginmedia @O2 Stupid is as stupid tweets