no mobile phones

This sign indicates places where mobile phone use is prohibited. It is commonly seen in quiet areas such as hospitals, libraries, and concert halls.

This sign embodies consideration for others. It represents an essential rule in examination halls and important meeting rooms. It's a rule we should all strive to follow together.

With the popularization of mobile phones in the 1990s, this symbol became established as an international standard pictogram representing electronic device restrictions. It has particularly contributed to preventing interference with medical devices and establishing a culture of respectful concert viewing.

Recently, it has taken on new meaning in conjunction with the digital detox culture. It has become a symbol that helps modern people achieve digital balance, used to encourage conversation by creating "phone-free zones" in cafes or restaurants, or to promote psychological stability in meditation centers.