The K-pop group Cortis reminded fans about not using phones at concerts and conducted a survey among them. Their request triggered various reactions on social media due to the attention given to capturing every moment. According to reports, there are diverse opinions within the fandom on this issue. Many fans value concerts as a live and authentic experience. Their request emphasizes the need to develop special etiquettes to maintain the atmosphere during concerts and fully perceive the stage presence.
SourceBBC World