// Guides
Guides on M2M and IoT SIM cards
Concrete explanations to choose, install and manage the SIM cards of your connected devices.
Guide
ICCID number: what it is and how to find it
What a SIM card's ICCID number is, how to read it, and where to find it: on the card, in the console, on a phone or with an AT command.
Read the guide →GuideMulti-IMSI SIM: how a multi-network SIM card switches networks
What the IMSI is, how a multi-IMSI SIM picks a network and switches, where it falls short, and how it compares with SGP.32 eSIM.
Read the guide →GuideLTE-M vs NB-IoT: which network for which connected device?
LTE-M, NB-IoT and LTE Cat 1 compared on speed, mobility, indoor coverage and battery, and how to choose for your device.
Read the guide →GuideIoT eSIM and SGP.32: remote profile switching for connected devices
eUICC, EID, SGP.22, SGP.02 and SGP.32: how IoT eSIM works, what it changes for a fleet of devices and what to check first.
Read the guide →