[1520] Not detecting sim card?

[WPCentral Question]

i have recently purchased a lumia 1520 and change my sim card to nano sim card but my sim card not detected
this message was appeared "a problem was occurred "
thanks.
Morteza

 

[Scienceguy Labs]

Probably a bad SIM card. I'd go back to your carrier and ask for another one.

 

[several potatos]

Go check to see if it comes up as stolen. If a phone is reported as stolen, the SIM won't even get a message to the network.

 

[Scienceguy Labs]

While I usually only agree with one potato, this time I am agreeing with "several potatos".

Where did you buy your 1520?
If you bought it on eBay, was the seller's rating good?