The specific plate card slot depends on which brand and model, because some plate card slots are used to hold mobile phone cards, and some are used to hold memory cards. There are also card slots in some tablets for mobile phone cards and memory cards.
If you are not clear, you can check the detailed instructions of the tablet or consult the customer service of the seller.
WiFi version means that it does not support the phone card function, the card slot supports memory expansion, you can put memory cards