Question: What is the primary purpose of the "+" key function on a User Equipment (UE) in relation to international access, as per 3GPP standards?
Option 1: To automatically detect and connect to available roaming networks.
Option 2: To generate a random international access code for enhanced security.
Option 3: To standardize the process of gaining international access by generating the international access code in the network.
Option 4: To disable international calling capabilities when roaming.
Explanation: The correct answer, Option 3, highlights the key's function to simplify and standardize international access. This aligns with the 3GPP principle of easing user experience, especially in scenarios like international roaming where access codes vary (e.g., between CEPT countries), thereby facilitating effective use of abbreviated dialing. This feature ensures a uniform method for initiating international calls, enhancing usability across different networks.