dual nano sim slot
Dual SIM Hack For Single SIM Slot Phones. | Hackaday
Extension for Dual SIM phone with hybrid slot 2 SIM + 1 micro-SD in your Dual SIM mobile Increases your Dual SIM smartphone's performance Nano SIM and micro SIM format.
iPad information series: Can you put a sim card in an iPad?
iPhone 13 models and earlier also have a SIM tray for a nano-SIM card—you can use a nano-SIM card from a carrier. iPhone 13 models and later support Dual eSIM.
iPhone 13: New eSIM Features | Dual (Nano & eSIM) Setup
iPhone 13 dual SIM Support and New eSIM Features. How they enhance Flexibility and Connectivity, learn how to setup dual SIM (Nano & eSIM)