Sim card unavailable your mobile network..

[Android Question]

I keep getting this message on my Nexus 4 phone:

Sim card unavailable your mobile network will be unavailable until you restart with a valid Sim card installed

HELP!

 

[SiempreTuna]

Sounds like a dodgy SIM card. Take the phone and SIM card to a network store (your network, obviously ) and they usually replace it without charge in a couple of minutes.