Does the iPad Have a SIM Card? And How Do I Remove It?
A SIM card is used to connect to cellular networks. Some iPad models come with a SIM card while others do not.
Amazon Fire HD 7 - Full tablet specifications
Does the Fire HD7 4th Gen tablet have a SIM card slot as well as a SD card slot then, as later Gen models don’t seem to have one?
iPad Pro 11" (2018) SIM Card Slot/Reader
Replace the SIM card socket for a 1st Gen 2018 model 11" cellular iPad Pro.