What are virtual SIM cards?

Apple SIM and Google Fi virtual SIM cards might be the future of cellular technologies; still there are not many of them around. But why?

What Is A Virtual SIM Card And How To Get One?

Virtual SIM card system and method of using virtual SIM card by mobile terminal - Eureka

SIM card: The essential chip shaping mobile communication - FasterCapital

Virtual SIM card for travelers with low-cost mobile data

What is a virtual sim? - Quora

International worldwide virtual 500MB M2M data SIM cards for IoT device roaming smart watch Pet collar GPS for men - AliExpress

eSIM card, a digital SIM card that works like the traditional SIM card

Can I switch from eSIM to physical SIM? Answer by Ubigi

3 Ways a dual-SIM phone can make your life better

Virtual SIM Card: What is it & How to get one in Android & IOS?

In Depth - Virtual SIM

Connect Globally with Virtual Phone Numbers