若手机通话呼出失败,可通过以下方法排除:
检查手机电话卡余额是否足够,或更换SIM卡,排查是否SIM异常;
手机设置--关于手机--SIM卡状态--信号强度,查看下信号强度,更换时间地点联系人,排除网络问题;
可更换下环境或开启飞行模式再关闭,尝试重新搜索信号;
确保手机为最新版本号,最新版本通常会优化系统的稳定性。
若以上方法均未能解决你的问题,请携带购机发票、保修卡和手机前往就近的OPPO客户服务中心检测处理。
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