O2

O2 Outage Report in Welwyn, Hertfordshire, England

Some problems detected

Users are reporting problems related to: phone, internet and total blackout.

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 11/25/2025 21:20

November 25: Problems at O2

O2 is having issues since 08:20 PM GMT. Are you also affected? Leave a message in the comments section!

Most Reported Problems

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

  1. Phone (47%)

    Phone (47%)

  2. Internet (30%)

    Internet (30%)

  3. Total Blackout (16%)

    Total Blackout (16%)

  4. Wi-fi (3%)

    Wi-fi (3%)

  5. E-mail (2%)

    E-mail (2%)

  6. TV (1%)

    TV (1%)

Live Outage Map Near Welwyn, Hertfordshire, England

The most recent O2 outage reports came from the following cities: Hemel Hempstead and Stevenage.

Loading map, please wait...
City Problem Type Report Time
United KingdomHemel Hempstead Internet
United KingdomHemel Hempstead Phone
United KingdomStevenage Phone
United KingdomLuton Internet
United KingdomLuton Internet
United KingdomLuton 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 Welwyn, England

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

  • 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

  • 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?

  • 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

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

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

  • 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!

  • 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.

  • 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 👇

  • 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

  • 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

  • ashley_leggett Ashley Leggett (@ashley_leggett) reported from London Colney, England

    @O2 full 4G signal in Chelsea and can’t even load a PDF attachment or Instagram post. Absolute shambles. Same over in white city. Same in London Bridge. Got better service last week 2000M up a mountain in Austria

  • 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

  • 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

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

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

  • 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.

  • 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.

  • 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 👇

  • 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.

  • 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

  • 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

O2 Issues Reports

Latest outage, problems and issue reports in social media:

  • Dreamit_Doit Nicole (@Dreamit_Doit) reported

    @O2 hi- I really need some assistance & the chat option isn't working- can someone help me please?

  • daniellakg Daniella (@daniellakg) reported

    @O2 what is this appalling service!? dealing with credit check team - no reply after numerous emails...apparently my issue was transferred to a "backend" team but they can't be contacted so no idea what's going on 👎 I don't understand this when I'm wanting to be a customer🤔

  • suzykingevents Suzy King Events (@suzykingevents) reported

    @O2 worst customer service experience- shocking - you have had our handset 6wks- still not fixed, no comms and when I call daily, zero interest ?! We have 4 handsets under our roof with O2.. not for much longer - horrendous and unnecessary

  • SqueakySays Squeaky (@SqueakySays) reported

    Well @O2 at 14:30 yesterday I was faithfully promised “I realise you may not believe me, but your service WILL be restored within 24hrs” Nothing so far…..you have 4.5 hrs left to get your act together 🤬🤬

  • twoshadesofhope Aisling Gallagher (join a union) (@twoshadesofhope) reported

    @O2 hi, i can’t log into the o2 venue app to get a ticket for a gig I bought via ticketmaster resale, the ticketmaster log in details are correct. Can someone please help me?

  • Stuckinlondon1 Freyja (@Stuckinlondon1) reported

    @Ofcom I’m reporting @O2 . What’s it called when you pay for a service and the service provider does not provide such services???

  • AnnalisaRcr Annalisa Ricciardi (@AnnalisaRcr) reported

    @O2 @O2 is jugging me because I moved in with my partner last November, and lived in the previous flat for only one year (over 10 years in UK in long rent contracts). This makes my credit score a 'bad' score, meaning I can't have a sim plan with @O2 . Aren't you ashamed of yourself?

  • PennCommsUK PennGroupCommsUK (@PennCommsUK) reported

    @O2 when can we expect to have our service back, please? There has been zero service in the EC2N 2HE since last week.

  • SlothDebaucher Jack Aubrey (@SlothDebaucher) reported

    @O2 I've tried a different device and browser. The error message always appears after I select my address from the list of options, so I never make it as far as getting to enter my payment details. Never previously had a problem with it, either!

  • sbm64fv2mv Wildcatpete (@sbm64fv2mv) reported

    @O2 shoddy corrupt network. My wife cancelled a number from her account, you cancelled the direct debit for her airtime on her phone which meant we missed a payment so you sent a nasty letter. We went to the O2 store in Weymouth where your customer support agent