Can not detect sim card.

It's hard to gauge what you're actually looking for here.

Schematic? Do you mean systematic, screenshots of setting up the SIM card? Schematic is a type of blueprint...

You also have not provided which provider the Asia is with, and what version of windows/android the tablet is running.

Otherwise, have you tied the SIM card in another device and confirmed that it works?

For some reason I also want to ask if the card is still active, SIM cards tend to be trash if you've removed the phone number from it...

Is the SIM card plugged in wrong? I know with my first. Sim device (a watch) I kept putting it in backwards... refused to recognize.

i have the same problem and the icon of the sim card network on the screen is not active