But it can be trouble for some users as they discover they need an existing phone number to install apps like Whatsapp. Articles about such as plentiful but keep reading if you find that article lacking. For me I just installed Whatsapp and was done in about 5 minutes.
I have tried to find it for you, but unsuccessful.
If the tablet can take a sim card then you can make a call from it like android phones. However, if it does not have a sim card jacket then use the below apps for call purpose:
Buy an eSIM number