手机没有信号是因为信号在传播过程中会受到地形、地貌、高楼等各种因素影响,如果您所在位置是比较封闭的地方,信号将会受到影响。处理方法如下:
1、将手机重新开关机再次尝试;
2、将手机卡换到家人或朋友的手机上再次尝试;
3、看周围的其他联通用户是否有信号;
如都没有信号可联系联通对外统一客服热线10010人工客服反馈情况。
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