手机无法发送短信的原因如下:
1.手机未开通短信业务,您可以联系10010客服或到当地营业厅开通此功能;
2.未设置或设置的短消息中心号码错误,重新设置即可;
3.信号弱,无信号或手机电池电量不足,造成信息不能正常发送;
4.由于系统繁忙造成,特别是节假日短信发送量高峰期,建议您稍后再试或避开发送高峰期;
5.发送格式不正确。如给小灵通用户发送短信,号码前需加区号;
6.短信发送保留有效期为24小时;
7.短信收件箱与发送箱是否已满;
8.建议您重新开机或更换手机测试一下。
除了以上简单排除故障外仍无法解决,可联系人工客服查询处理。
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