NB-IOT (also called LTE Cat NB1 and LTE Cat NB2)

Introduction
NB-IoT was established between 2015-16 as new cellular radio access technologies.


Sim Cards


4FF - Nano SIM
Commonly used in many devices



MMF2 . E-SIM
eSIM is the future of SIM cards, using a completely different technology.
It is a common mistake to refer to an embedded chip SIM (MFF2) as an eSIM, but that is not always the case. An eSIM can come in all modern form factors such as 2FF, 3FF, 4FF, and also MFF2.

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