My Nexus 6 says no sim card need help?

[Deleted User]

My phone says it has no sim card but my sim card was working fine before, but when it dies see the sim card I can't message and can't make calls I tried installing the firmware again but nothing is this a huge bad sign of a hardware failure?

 

[Hadron]

Does the SIM work in another phone? It could be a sign of SIM failure rather than a phone problem.