O2

O2 Outage Report in Welwyn, Hertfordshire, England

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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 Welwyn, England

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

O2 Outage Chart in Welwyn, Hertfordshire, England 12/17/2025 06:30

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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 (31%)

    Internet (31%)

  3. Total Blackout (16%)

    Total Blackout (16%)

  4. E-mail (4%)

    E-mail (4%)

  5. Wi-fi (3%)

    Wi-fi (3%)

  6. TV (1%)

    TV (1%)

Live Outage Map Near Welwyn, Hertfordshire, England

The most recent O2 outage reports came from the following cities: St Albans, Hertford, Waltham Cross and Hemel Hempstead.

Loading map, please wait...
City Problem Type Report Time
United KingdomSt Albans Phone
United KingdomHertford Phone
United KingdomWaltham Cross Internet
United KingdomHemel Hempstead Internet
United KingdomHemel Hempstead Phone
United KingdomStevenage Phone

Community Discussion

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O2 Issues Reports Near Welwyn, England

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

  • Palouisea UnhappyHoopla (@Palouisea) reported from Shenley, England

    @VOXI_UK I have been on a staycation this week I am appalled at how poor your reception is in many parts of South East. Going back to @O2 as sim only!! Very frustrating 😕 missed many important phone calls. Pm me to discuss

  • HilaryRWriter Hilary Robertson (@HilaryRWriter) reported from Hitchin, England

    @O2 Yes. I’m trying to cancel my mobile broadband and cannot do it on myO2. The ‘help’ keeps sending me round in circles

  • johndpmc none of your business (@johndpmc) reported from Luton, England

    @O2 words fail me with how shockingly bad you are Your service is appalling, doing a sim swap on my behalf without telling me or having the new sim in my possession!So now no phone or contact to anyone unless in WiFi, wanna hope I have no accidents when I’m outside!! #theworst

  • lovepbx Pauline (@lovepbx) reported from Waltham Abbey, England

    @O2 can someone from customer services contact me ... I need urgent help ... Thanks

  • MarkstanYoutube Mark Stanford (@MarkstanYoutube) reported from Luton, England

    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 👇

  • behu91 Ben (@behu91) reported from Hemel Hempstead, England

    @O2 are breaching trading standards. Have sent me a voucher code but are not allowing it to be redeemed against S21. Apparently due to being a new launch device, however there is nothing in the terms and conditions to suggest this should be an issue.

  • lovepbx Pauline (@lovepbx) reported from Waltham Abbey, England

    @O2 I have been trying to talk someone ... please can someone get back to me! I need urgent help.

  • ShanWilson_ Shan Wilson (@ShanWilson_) reported from Hemel Hempstead, England

    @O2 @mtsavor I cannot call 202 or any other number that is supposed to be “o2” as I don’t know who I’m talking to. I’ve been hung up on twice when I’m explaining what’s happened. I need to cancel the iPhone contract or change the address with an actual o2 staff member!

  • Mattoco Matt O'Connor (@Mattoco) reported from St Albans, England

    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 👇

  • philter66 Phil Turner (@philter66) reported from Hatfield, England

    @O2 simply dreadful customer experience tonight -felt really let down

  • GoonerKJP Kaz 💋 (@GoonerKJP) reported from Stevenage District, England

    @O2 when I upgrade with a different network next week do I cancel my direct debit with you? Or do you do it ? @Barclays

  • JohnDWebb John Webb (@JohnDWebb) reported from London Colney, England

    @Stephen_Neal @O2 It’s the same with @NatWest_Help - their URL is ‘nwolb’ to login and check stuff. Surely these big companies should be leading by example?

  • emmatrainis Emma Trainis (@emmatrainis) reported from Shenley, England

    @O2 I ordered Disney + on 24.12.20 on Priority and have not received an email. Cannot get through on phone or live chat. Please can someone help me

  • misswotless1 Miss Wotless (@misswotless1) reported from London Colney, England

    Remind me never to frequent the @O2 store on Oxford Street again - so rude and unhelpful, telling the customer before me not to come back

  • CalvinLaurenson Calvin Laurenson (@CalvinLaurenson) reported from London Colney, England

    @O2 is your London 4g network having issues? I have multiple o2 devices that aren't connecting

  • a1_nos A1NOS (@a1_nos) reported from Hemel Hempstead, England

    Hey @O2 showing again why you really are market leaders in Customer Service. Big shout out to Lauren. 👌👌👌

  • JoshBates Josh (@JoshBates) reported from London Colney, England

    @O2 Hi, can you please help me add Spend Cap to my Pay Monthly account? Don’t seem to be able to do this from web site which is a little frustrating to say the least x

  • lordshaun_ Lord Shaun O’Brien (@lordshaun_) reported from St Albans, England

    @O2 customer services truly are as much use as an ashtray on a motorbike.

  • JanGoodeve Cllr Jan Goodeve (@JanGoodeve) reported from Hertfordshire, England

    @traceylsteve @O2 @GreggsOfficial I had the same issue in the #Hertford store, the app just said to try again later so ended up paying.

  • ian_slade2 Ian Slade (@ian_slade2) reported from London Colney, England

    @O2 is the data network down? Zero mobile data connectivity all day. Plenty left on the plan

O2 Issues Reports

Latest outage, problems and issue reports in social media:

  • gazza_kjones gareth jones (@gazza_kjones) reported

    @O2 I’m currently abroad and think roaming is barred on my phone, I need it unbarring, can you please help? No service, no Apple Pay, no Google maps, no calls in or out, nothing, please help!!!

  • ajccoles Alex Coles (@ajccoles) reported

    @O2 why have I been billed £50+ for roaming inside Bosnia, a country I have never stepped foot in in my life? Joke

  • IainSMacPherson Iain S MacPherson (@IainSMacPherson) reported

    @O2 please check your DMs from me and advise a 20-year plus customer quickly losing patience with your service.

  • Day89 Day (@Day89) reported

    @martins_gerry @O2 Shite aren't they, I get a half decent Internet signal mostly but absolutely appalling phone coverage no matter where I am in the country, have to have it set to WiFi calls constantly and be around a WiFi signal just to make a bloody call half the time

  • jonathonfp Jonny Pugsley (@jonathonfp) reported from Camden Town, England

    @O2 your 4G service in London is absolutely dire currently. And you’ve just put my price up for the privilege of it.

  • IainSMacPherson Iain S MacPherson (@IainSMacPherson) reported

    @O2 This problem gets worse each time we travel to Italy with our iPhone 12s and O2. No network now at all.

  • trotttrott3 dane trotter (@trotttrott3) reported

    Nah @O2 you need to sort this out. A mast has been down for WEEKS now and I haven’t had ANY data. I should not be charged for data that I haven’t been able to use. It was supposed to be fixed by today

  • KristoforLearm2 Kristofor Learmonth (@KristoforLearm2) reported

    @O2 I really hate O2. I'm from Scotland and bought a really cheap phone to surf with. It was locked to the O2 network. Someone was screwing around with it all of the time and the customer service team were really rude.

  • wasaba WB (@wasaba) reported

    @O2 can you please tell us why our number is not working properly please.

  • MixedMagicWoman Teresa Fowler (@MixedMagicWoman) reported

    @O2 Help please @O2