Why my Microsoft 435 Lumia doesn't reconise my SIM ?

[Windows Central Question]

I have bought a Microsoft 435 Lumia phone, i inserted the SIM in the SIM 1 slot correctly but when i try to make a call i receive this message "SIM Error , The SIM is missing or is not valid. You can make emergency calls, if the mobile operator accepts them." . Also the contacts in the SIM are not shown.

 

[charlatan1978]

Hi, your phone isn't detecting the SIM.
Can you try removing and reseating the SIM?
Failing that is there another phone you can try the SIM in?

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