SIM error since .218 build

[Skinshifter]

Greetings.

I own an AT&T Lumia 1520, using Preview release in Insider. Since .218 build, sometimes the phone shows SIM error and I have to reset it or turn it on again. Any idea? Is it software malfunction or maybe it's something about the SIM slot.

 

[v535]

Is it an unlocked phone with ATT Sim or what? If SIM is removable, try it on another phone otherwise there is definitely something wrong with sim reader or sim card itself.

 

[Skinshifter]

Yep. I will try in another phone. Never happened before.

Sean Sabe