1. An area where electronic signals, such as cellular, WiFi, or radio signals, cannot be received or transmitted
The remote cabin is located in a no-signal zone, making it impossible to use mobile phones.
A cabana remota está localizada em uma zona sem sinal, tornando impossível usar telefones celulares.
2. A region with poor or absent telecommunications connectivity
Hikers should avoid the no-signal zone in the valley during emergencies.
Os caminhantes devem evitar a zona sem sinal no vale durante emergências.