Builds on: Telecom Basics (Part 1): Networks, Calls, and Cell Towers
Subscriber Identity: SIM, eSIM, IMEI and Number Portability
Readiness training. LEA.Training does not grant any official certificate, licence or authority.
A phone number is not a person. Between the number and the person stand a subscription, a SIM, a handset and a name on a form. Each has its own identifier, and each can change hands. This unit shows what each identifier proves, and where the chain is weak.
Focus: four identifiers, and one rule: a subscriber record is a lead, not proof. This unit is not legal advice.
Learning objectives
- Tell apart the number, the subscription, the SIM and the handset.
- Explain what an eSIM changes for an investigator.
- Say why a handset number or a subscriber name can mislead.
- Find the right operator for a number that has been ported.
This lesson opens when you enrol
₹1,299 · Communications and Network Evidence, all 14 lessons · 365-day access · Price includes GST
Already bought it? Sign in to open it in your classroom.
Video coming soon. The lesson text covers everything you need.
Learning Check
A short, untimed check for this lesson. It is not graded and does not count toward the final assessment. The check runs on the server: questions are sent one attempt at a time and answers are never sent to your browser before you submit.
An offline PDF of this lesson will be available here for enrolled learners.