Remember SIM
Full name: Subscriber Identity Module
Memory aid: Subscriber Identity travels in a Module.
A SIM is not the phone's IMEI.
Study area: Mobile & cellular · Batch 1
Relevant study for: CompTIA A+ Core 1 220-1201 · CompTIA Network+ N10-009
Practice with exam flashcards →Hardware & Components / Knowledge library
SIM — Subscriber Identity Module
Stores credentials used to identify and authenticate a mobile subscription.
Why learn SIM — Subscriber Identity Module?
Stores credentials used to identify and authenticate a mobile subscription.
Where it came from
A SIM is not the phone's IMEI.
- Memory aid (a learning cue, not the expansion): Subscriber Identity travels in a Module.
Build your understanding
Work through these exercises in order. Try the task before opening a reference.
- Without looking, expand SIM: Subscriber Identity Module.
- Recall this memory aid: Subscriber Identity travels in a Module.
- Explain the practical use: Stores credentials used to identify and authenticate a mobile subscription.
- Explain this distinction: A SIM is not the phone's IMEI.
- Identify SIM in a device specification, architecture diagram, or system inventory.
Documentation and sources
- GSMA technology resources (www.gsma.com)