We are aware our customers are unable to use data this morning. Our technical teams are working on the issue with high priority. We are really sorry and working as hard and as fast as we can to fix this. Please keep an eye on our status checker: o2.uk/ServiceStatus

@O2 @AshbyCharles Hi O2, I have 4 of my workers on your network that can not use their phones. Thank you for this, it's the most work I've seen them do in a long time. Kind Regards Jamie x

@O2 HOW ARE WE SUPPOSED TO CHECK WE DO NOT HAVE ANY DATA YOU BATTY BOY

@O2 How can we check if we don’t have internet I’m standing a station getting WiFi on the way to work. Why can’t you send a cellular message #PoorCustomerService

@O2 This is getting annoying, 3rd/4th time this year! Struggling to see why I have to stick to contract when O2 fails to provide service multiple times in year! #letmeexit #contract #termination #servicefailure - can you let me terminate contract early without penalty due to service

@O2 My little girl uses her phone as a medical device, it links to her Continuous glucose monitor that tests her blood sugar constantly it then sends the data to my phone so I know if her bloods are dangerously low or too high. We rely massively on her having internet access. 😥

@O2 It isn't just data. I can't make calls or send texts either.

@O2 I have been switching my phone on and off since 6am! We could have at least got a text message !!!

@O2 Service checker says my area is fine but it's not, no data access at all.

@O2 We must be compensated data and a deduction in bill prices, this is ridiculous. You lot take some much money from me.

@O2 Can customers expect too see a discount on their December bill? It’s hard to justify charging customers for a service they’re not receiving.

@O2 No service! Im using @scotrail wifi! I will be leaving o2 when this contract ends in a couple of months

@O2 Compensation? You keep having this problem and we keep having to pay for poor service. About time you put your money where your apologies are and have some cash back.

@O2 The worst mobile service ever . It’s not just today happened two weeks ago aswell so o2 should consider compensated us