SIM card sizes explained: Mini, Micro, Nano & eSIM

SIM card sizes explained: Mini, Micro, Nano & eSIM

Explore the evolution of SIM cards—from full-size and Mini SIMs to the modern Nano SIM and eSIM—understand their differences in format, dimensions, and functionality for today’s devices.

04.09.2025

The integrated SIM iSIM explained A1 Digital

The integrated SIM (iSIM) explained

Explore iSIM technology and how it’s revolutionizing the way devices connect to mobile networks. This article delves into the advantages of iSIM, including its space-saving design, enhanced flexibility, and how it’s shaping the future of IoT applications.

04.08.2025

IMSI: The central subscriber identification explained

IMSI: The central subscriber identification explained

The IMSI number uniquely identifies mobile subscribers within a network and is essential for secure communication in mobile services and IoT applications. This article covers its function and key security aspects.

29.07.2025

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