许多用户在打手机时,常听到“手机用户不在服务区”的应答声,这到底是怎么回事? 据了解,出现“手机用户不在服务区” 的状况,主要是由于以下几种原因: 一是对方手机用户在网络覆盖区以外,如郊区农村等尚未建设网络通信设施的地方; 二是在电梯内、地下场所、建筑物内等地,无 Many users are playing mobile phones, often hear the “mobile phone users are not in the service area,” the answer, which in the end is how it happened? It is understood that there “mobile phone users are not in the service area” situation, mainly due to the following reasons: First, the other mobile phone users outside the network coverage area, such as rural areas such as rural areas have not yet built network communication facilities; Second, in elevators, underground places, buildings and other places, no