If - like me - you're an O2 mobile user, you may well have found your phone strangely silent yesterday afternoon. From around 2pm, thousands of customers were unable to make or receive calls on the company's network.
As I write this the company says the problem is on the way to being fixed, but the resulting news stories and thousands of tweets don't make pretty reading for the telecoms giant.
In a world where we rely on mobile phones for, well, everything, it can come as quite a shock when the expensive one in your pocket is rendered useless for 18+ hours.
No calls. No texts. No emails. No tweets. No maps to guide you if you're in a strange place. No point in having the thing!
The consequences of this outage for business could be serious. If you're out and about, you can be rendered incommunicado. Companies which rely on homeworkers or have mobile sales teams are likely to have been particularly hard hit.
If customers and colleagues can't get hold of you, it holds things up. Decisions don't get made. Perhaps sales get missed.
If you've been affected by the outage, it's lousy. But it should be a wake-up call for all of us: sometimes, these things happen (they shouldn't, but they do). And that's why you need to be prepared.
The problem is, short of buying a second mobile phone on a different network for each member of staff, it's hard to put in place a failsafe backup for this sort of event. Even if everyone does have a second phone, it's no good unless people know its number!
However, here are three suggestions that can make it a little easier to stay in touch during a big mobile outage:
More fundamentally, perhaps problems like this highlight the benefits of a unified communications system. That can give you just one number, which you can redirect to wherever required.
Has your business been hit by the O2 outage? Is your service back to normal yet? Leave a comment and let us know how you coped.
(Image: Flickr user sridgway under Creative Commons.)