Glossary
There are many terms used in the M2M/ IoT/ Telecom world that can be confusing. Here’s an attempt to make sense of it.
Terms | Meaning |
2FF | Standard/ Traditional SIM (2nd form factor) |
3-in-1 plug-in SIMs | SIMs that can be broken into Standard, Micro and Nano SIM form factors |
3FF | Micro SIM (3rd form factor) |
4FF | Nano SIM (4th form factor) |
Automotive grade SIMs | Purpose built to comply with the automotive sectors’ tough quality management standards (such as PPAP, AEC-Q100) and with higher data retention span (15-17 years). |
Embedded SIMs (eSIMs) | SIMs that can be embedded into devices, not meant for plug-in slots typically found in handsets. The machine Form Factor with the widely accepted Surface Mounted Device (SMD) form factor now being MFF2. |
eUICC | While previously, a SIM would belong to a particular network operator, the eUICC allows the user to take control of the connectivity. |
Industrial grade SIMs | Produced with higher resistance with an expanded temperature range of -40°C and +105°C. Other factors such as corrosion and impact on SIMs from vibrations were also improved. |
MFF2 | Standard embedded SIM Surface Mounted Device (SMD) (Machine form factor 2) |
Standard grade SIMs | Operational within a temperature range of -25°C and +85°C |
Subscription Management | Referred to also as Remote SIM Provisioning Platform, it is the counterpoint to interact with eUICC SIMs to manage profiles on a SIM. |
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