对双卡双待手机同时插入联通、移动SIM卡后,局部区域联通出现脱网,显示“紧急呼叫”的现象进行了信息收集,并开展相关实验,最终找到了引起此现象的原因。结合原因分析,提出了相应的规避措施,解决了用户的投诉,提升了用户使用业务的感知度。 Dual SIM dual standby mobile phone at the same time insert China Unicom, mobile SIM card, the local area network Unicom appeared “emergency call” phenomenon information was collected and carried out related experiments, and finally found the cause of this phenomenon. Combining with the reasons, this paper puts forward the corresponding measures to avoid the user’s complaints and enhances the user’s perception of using the business.