Woo Ri's use of 2G phone is becoming an issue among netizens.

During a TV show, a clip of Woo Ri using a 2G phone was aired during KBS 'Invincible Youth.'

On the other hand, Jewerly’s Yewon was using the most recent smartphone.

Woo Ri, who is the oldest member of KBS 'Invincible Youth' cast, has received the nickname 'Grandma' for her down to earth personality.

Netizens who noticed her use of a 2G phone commented "Proving herself as a grandma," "Perfect phone for a grandma," "I also use 2G phone."