Question: What is a key characteristic of a GPRS-aware SIM, as related to its compatibility with A/Gb mode Mobile Stations (MSs) for accessing GPRS services?
Option 1: Ability to store information in the elementary files EFKcGPRS and EFLOCIGPRS.
Option 2: Capability to operate solely in Iu mode.
Option 3: Requirement for software updates to interact with non-GPRS PLMNs.
Option 4: Necessity for dual SIM slots in the MS.
Explanation: A GPRS-aware SIM is distinguished by its ability to store specific information in the elementary files EFKcGPRS and EFLOCIGPRS, ensuring compatibility with A/Gb mode MSs for accessing GPRS services, highlighting the importance of SIM functionality.