LAN Cable Friends I.O.I will follow the members of the I.O.I girl group unit Jeon Somi, Choi Yoojung, Kim Sohye, Kim Chungha, Zhou Jieqiong, Kim Doyeon and Lim Nayoung because they spend time in their dormitory. Through the trailer, 7 members share 3 observation points. LAN Cable Friends I.O.I is a...