My phone is not connected to a mobile network. When I try to place a call I get a message saying that it is unavailable. When I try to choose a provider, O2 Vodafone & Meteor show up in the list but choosing O2 does not work.

I have followed all the troubleshooting options as suggested here: http://community.48months.ie/t5/Need-Help/Getting-message-quot-Mobile-Network-Not-Available-quot-Ple...

My phone is a Moto G. It worked fine until Friday evening.