Wise User

Mobile communication service refers to communication that enables service even when moving by giving mobility to a subscriber terminal, and is generally called a mobile phone
Major mobile phone operators: SKT, KT, LG U+

Alleulphone means reselling of telecommunication, which is a service providing independent service by borrowing the lines of existing Telecommunication Company (SKT, KT, LG U+)
Possible to use phone with reasonable price, but there is almost no membership advantages compared to Telecommunication Company

Main Altteulphone businesses

Main Altteulphone businesses
Network	SKT	KT	LG U＋
Brand(Company Name)	7 mobile(SK tellink)	Snowman(SejongTelecom)	Hellomobile(LG Hello Vision)
Brand(Company Name)	safemobile(S-1)	DreamMobile (Dream Line)	Liiv mobile(KB Bank)

Intelligent terminal which added computer supportive functions like internet and information searching to mobile phones. Able to install applications if the user wants
Able to use Internet searching, sending and receiving E-mail, camera & video, music & movie, and by installing applications, SNS, game, ticket purchase everywhere, every time

4 Generation Mobile Communication means the service which can all use satellite networks, wireless LAN, and Internet with a terminal
1st generation mobile communication is a service with only voice calling
2nd generation mobile communication is a service with digital voice calling
3rd generation mobile communication is a service with packet data service that can send voice calling, message, data and others
4th generation mobile communication is a service which can provide multimedia service like sending videos, internet broadcasting by improving the sending speed more than dozens compared to 3rd generation mobile communication IMT=2000

5th generation mobile communication is a mobile communication technology with a maximum speed of 20Gbps, which is 20 times faster than LTE, 100 times more processing capacity, and its strengths, ultra-low latency and hyper-connectivity, enabling services such as virtual reality, autonomous driving, and IoT technology

Roaming service is a word that means wandering, enabling communication by notifying the terminal when communication users want to communicate in other call areas, such as mobile phones and the Internet In other words, roaming is a service that enables mobile communication with numbers previously used in Korea, and refers to a service that allows users to use mobile phone services such as voice, text, and data as in Korea other than in the service area