Why I receieve the message"'The SIM card is missing sim or invalid" and over the screen" no SIM''?

[WPCentral Question]

Why I receieve the message"'The SIM card is missing sim or invalid" and over the screen" no SIM''?

This happened when I resetted my WP Lumia 1520 for not connecting to STORE. A mistake I'd done was to remove sim containing device while my phone was on.

 

[primuxprimux]

Re: Why I receieve the message"'The SIM card is missing sim or invalid" and over the screen" no SIM'

It's not related to reset , just remove SIM card and insert it again ,, I feel this problem also due to not proper connection of sin and slot