An eSIM also known as an embedded or electronic SIM, is a SIM that is built into your mobile device and cannot be physically removed. There is no physical SIM card that you need to insert.

A SIM card is a physical chip card you slot into your phone normally in a tray that pops out from the side. A SIM usually has 3 sizes: Mini-SIM, Micro-SIM and Nano-SIM. A SIM card's most significant benefit is its portability. You can switch between devices in seconds, and you will not have to contact your carrier.

An eSIM is an embedded SIM card fitted into the phone's motherboard. It runs on the same networks as standard SIM cards, so there is not much difference in how they work outside the initial set-up and transferring of your number and plan.

An eSIM performs the same function as a physical SIM card but removes the requirement to physically swap SIMs when switching between network providers.

 i.    eSIMs are hardwired to your device while physical SIM Cards are removable.

 ii.   There are limited physical SIM card slots in a device; eSIMs allow customers to have multiple mobile numbers on one device.

Yes. Many smartphones now allow an eSIM to be used for your mobile data, adding to their convenience factor when traveling to foreign countries. You can retain your phone number for regular communication.