The network outage that has taken down the O2 network today has been blamed by the company on a software glitch affecting a third-party supplier.
The outage has taken down the company's data network, although O2 subscribers can still make voice calls.
The outage started at about 4.45am this morning, taking with it services that rely on O2's mobile data network. Commuters using buses in London, for example, will have found that Transport for London's information systems were unavailable as they rely on the O2 network to communicate bus times.
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: https://t.co/O8fb26fNIv— O2 in the UK (@O2) December 6, 2018
Outage Update: One of our 3rd party suppliers has identified a software issue in their system. Our technical teams are working extremely hard to resolve this. We'd encourage you to use Wi-Fi wherever you can and we are really sorry.— O2 in the UK (@O2) December 6, 2018
Connected vehicles have also been affected, and the issue obviously also affects mobile virtual network operators (MVNOs) that use the O2 network. Services affected include Tesco Mobile, GiffGaff, Sky Mobile and Lycamobile.
The company blamed a software issue affecting a third-party supplier for the outage.
"We're aware that our customers are unable to use data this morning," the company admitted in a statement.
It continued: "One of our third-party suppliers has identified a global software issue in their system which has impacted us. We believe other mobile operators around the world are also affected. Our technical teams are working with their teams to ensure this is fixed as quickly as possible."
@O2 Maybe you could keep your customers informed of your progress in fixing the data issues. It's been 2 hours without an update?— David Liddle (@aboycalleddavid) December 6, 2018
Customers, understandably, have been somewhat disgruntled as a result, particularly given the length of time that it has taken the company to fix the problem.
However, not every customer was unhappy to be without service today.
I have a day off work and now you've made sure work can't contact me. Very good work O2 - I'm enjoying the peace and quiet 😍 Sounds like a stressful morning for you guys though :-(— Dawn Marie Bates (@DawnPedel) December 6, 2018
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