During their KakaoTalk fan sign with 'NewsAde', the SF9 members were asked how they saved one another's names in their mobile contacts!
Taeyang first revealed that he simply used the members' real names, reasoning, "If I used something else, I would forget who the person was." Chani then chimed in with, "I use 'Somori Gukbap' (hard-boiled beef head meat soup). For Jaeyoon hyung."
Rowoon then asked what his contact name was saved as out of curiosity, to which Chani replied, "Hyung is Ssuk Woo hyung." (Rowoon's real name is Kim Suk Woo.) Finally, Chani shared that Inseong's name in his phone was saved as "Grandpa hyung".
Rowoon also revealed that he used the members' full, real names as well.