1. An area or region where wireless signals, such as cellular, Wi-Fi, or radio signals, are significantly diminished or difficult to receive
This basement is a weak signal zone where my phone has no reception.
Este porão é uma zona de sinal fraco onde meu telefone não tem recepção.
2. A location characterized by poor connectivity or transmission quality for electronic communications
The rural areas are known as weak signal zones in the country.
As áreas rurais são conhecidas como zonas de sinal fraco no país.