Can’t make phone calls

[Emma17]

I have had not been able to make or receive phone calls all day! I need my phone for work! Any idea why this has happened? When I spoke to some one at o2 I was told there’s a problem with the network. Is this likely to be fixed today? I need my phone to review calls for work!

[jonsie]

There is a network issue
We are all customers so we can't give a timescale, sorry
From O2
We’re aware some customers experienced issues with voice calls this morning and our technical teams have now restored service. If you're still experiencing issues making and receiving calls, try switching your device off and on again which will help your service return to normal. We apologise for any inconvenience caused

[MI5]

There is an ongoing issue @Emma17 

Try rebooting your phone.