Question: What happens to a Mobile Equipment (ME) that has been SIM/USIM personalised when a different SIM/USIM is inserted, and what is the primary purpose of this feature?
Option 1: The ME will automatically switch to roaming mode; the primary purpose is to enhance network coverage.
Option 2: The ME will enter emergency calls only mode; the primary purpose is to facilitate device tracking.
Option 3: The ME will restart with the new SIM/USIM's settings; the primary purpose is to simplify user experience.
Option 4: The ME will enter emergency calls only mode; the primary purpose is to act as an anti-theft feature, making the device less attractive to thieves.
Explanation: Upon insertion of a different SIM/USIM, a personalised ME enters emergency calls only mode. This feature primarily serves as an anti-theft measure, deterring theft by rendering the device unusable with another SIM/USIM, highlighting its role in enhancing device security.