Method and apparatus for processing profiles by considering removable EUICC supporting multiple enabled profiles

A method, apparatus, and system for a user equipment (UE) for aggregating a 5G communication system supporting a higher data rate after a 4G system and a communication technology of an Internet of Things technology are provided. The method comprises: performing activation and cold reset to configure an operating environment for supporting a mobile eUICC in an MEP mode; receiving an ATR message indicating whether the eUICC supports at least one eUICC function; determining a transport protocol based on the received ATR message; transmitting an APDU message indicating whether the UE supports an eUICC related capability; receiving a response message including a response code; determining to operate in a non-MEP mode; transmitting a command APDU message for managing channel opening, which is transmitted for channel opening; receiving a regular response message for generating a base channel; and performing an initialization between the eUICC and the UE. 提供了一种用于聚合4G系统之后支持更高的数据速率的5G通信系统和物联网技术的通信技术的用户设备(UE)的方法和装置以及系统。