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 11/21/2025 11:15

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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 (4%)

    Wi-fi (4%)

  5. E-mail (3%)

    E-mail (3%)

  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 Phone
United KingdomStevenage Phone
United KingdomLuton Internet
United KingdomLuton Internet
United KingdomLuton 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:

  • AddictiveColors Addictive Colors (@AddictiveColors) reported from London Colney, England

    @O2 I understand that carriages speed and materials do not help, but repeaters in tunnels sure would to avoid disruptions especially as they can particularly nasty to a laptop when the phone or the train is the hotspot as that side of the connection never goes down just the gateway’s

  • jmcomms Jonathan Morris 📱📸 (@jmcomms) reported from London Colney, England

    @VModifiedMind @benwood @EE @VodafoneUK @ThreeUK @O2 Albeit using half rate codec for voice. Sounded pretty awful.

  • stourdave Dave (@stourdave) reported from London Colney, England

    @O2 How did this shit happen

  • bks67 bridget sparks (@bks67) reported from Hertfordshire, England

    @O2 I do have the app, I think I will phone the customer service team and ask them,

  • RaviDheer Ravi Dheer (@RaviDheer) reported from London Colney, England

    @O2 I'm sick to death of your network. I'm trying to pay you and I can't. Now I'll wait for some fool to contact me. I give up with this pathetic network.

  • DimitthriV Dimitthri Vithanage (@DimitthriV) reported from London Colney, England

    @O2 what is going on! 😭😭 Even when I have signal it's so slow!

  • isthatdan Dan (@isthatdan) reported from Stevenage District, England

    @O2 are gonna have to either offer me an amazing deal or sort out this horrendous signal issue. How can I not load a twitter video when I have a full 4 bars of 4G signal

  • sarahcoysgabb sarah gabb (@sarahcoysgabb) reported from Broxbourne District, England

    @O2 trying to upgrade on app and main website but when I choose it crashes can anyone help

  • Kami2k10 Kamiioo (@Kami2k10) reported from Luton, England

    @BBCNews @O2 worst coverage ever no solutions. The network towers always down but yet I'm still paying 55£ p.m i have no choice but to pay!! #ripoffbritain #conmen

  • CraigFamilyBlog Hayley & Gavin (@CraigFamilyBlog) reported from St Albans, England

    Gav and I have had no mobile phone service for 3 days, but I have no service to call @virginmedia to let them know! It happens far too regularly. Just spent the morning searching for a new deal. @O2 looks like the best so far!

  • ItsMeEllisxD Ellis Brown (@ItsMeEllisxD) reported from London Colney, England

    @O2 Well it’s every time I leave Leicester. Or go to a new city.. even when I have 4 bars it’s either really slow or won’t load at all!

  • AEgbuonu ARIBBUZZ (@AEgbuonu) reported from Welwyn Garden City, England

    @O2 sort your cancellation team and phone problem out. #poorcustomerservice

  • AndrewTRIrwin Andrew Irwin (@AndrewTRIrwin) reported from London Colney, England

    @EmmaShubrook @O2 Agreed. I have no signal at all

  • dramattyhealy 🌜cobie🌛 (@dramattyhealy) reported from London Colney, England

    @O2 Hi, it’s been 2 weeks since i started receiving non stop calls from your call centres to get me get a plan with you, the caller said that i entered some kind of contest or signed up for this but i never did since i am happy with my current provider. This is very inconvenient

  • WickhamofWare Jonathan Flood (@WickhamofWare) reported from Stevenage District, England

    @O2 @tescomobile No mobile signal in Great Ashby, Stevenage all day!!

  • banafshbanafsh banafsheh (@banafshbanafsh) reported from Waltham Abbey, England

    @TazPDN @O2 So sorry to hear that ,#o2 is really bad, I'm with Vodaphone and they are much much better . Hope all get sorted for you x

  • jodyrandall Jody Randall Esq. (@jodyrandall) reported from Broxbourne District, England

    @O2 why is your 4G so bloody awful at Liverpool Street Station

  • PaulWRamsay #HellomynameisPaul (@PaulWRamsay) reported from London Colney, England

    Really bad service from @O2, having calls from a shop to pressure into upgrades, no really clarity when calling 202 to ask what’s going on-I think I need a new network!

  • mrjc90 Josh (@mrjc90) reported from Hitchin, England

    @O2 not sure when your call centre in Cape Town opened but it’s been extremely painful trying to solve a simple issue..I might of been unlucky but think staff could do with some further training

  • AFCAMDEN AFCAMDEN (@AFCAMDEN) reported from London Colney, England

    @SkyNewsBreak Would cancel my contract with @O2 immediately if they did.

O2 Issues Reports

Latest outage, problems and issue reports in social media:

  • MSCS91 Martyn Scott (@MSCS91) reported

    @O2 a newly erected warehouse building has completely destroyed out signal with o2. CV79JU anything we can do. We have no access to Wi-Fi.

  • philce Phil (@philce) reported

    @O2 afternoon! We’re currently on hols in Paignton and Torquay. 4G is impossible to use. 3G is sometimes useable. Do you have issues here or is it just capacity issues? It’s not even busy yet!

  • rajgupta292611 Rajinder Gupta (@rajgupta292611) reported

    @O2 I am trying to transfer old number to new sim. My old number has been made out of service by O2 for the last 4 days and every time ring customer care service and says it takes 24 hours and hung up the phone. Please restore my number

  • rajgupta292611 Rajinder Gupta (@rajgupta292611) reported

    @O2 I wanted my old number to be migrated into new number but still not completed. My old number has been out of service for the last 90 hours and I made around 15 calls since Monday and I was told wait 24-48 hours every time and managers can’t speak directly

  • rajgupta292611 Rajinder Gupta (@rajgupta292611) reported

    @O2 please help I have applied for transfer of old number to new number (both are with O2)on 9/7/22 and now it’s more than 90 hours my old number is out of service because of O2. I don’t have any connectivity because of O2

  • Dees_artwork Dee Walker Fine Art Painter (@Dees_artwork) reported

    @O2 We ve had to change mobile phones to another provider as the signal is dreadful in Bunbury with #o2 Today the newly installed SMART METER didnt work because it relies on @O2 …. NOT HAPPY. With another signal provider it would work because our mobile signal is GOOD

  • ThisFireBurns__ AyyLiamaoo (@ThisFireBurns__) reported

    @O2 Now if only I could actually use my 4G in the UK instead of having it lock up due to the people with unlimited data hogging all of the bandwidth on tiktok, D+ and netflix. Giffgaff have no problems and yet use your service and they also offer EU roaming. £10 a month for 15GB also

  • helenmc46972890 Helen Mrs Happy (@helenmc46972890) reported

    @lozzylols @O2 And I’ve just upgraded to get more mobile data too and it’s not working

  • RebeccaWilcoxxx Rebecca Wilcox (@RebeccaWilcoxxx) reported

    @O2 Yes. Since we first visited the house when it was just some bricks. My husband and a few of my neighbours have the same issue

  • LynneCarstairs Lynne Carstairs (@LynneCarstairs) reported

    @GeorgeMonbiot @VodafoneUK I'm so sorry, that's awful. Having done this when my mum died, I have to say that @O2 was fantastic. The contract wasn't even in her name as I paid for it but they closed the account and wrote off the balance with just one email of the death cert. Such a help.