SIM卡“再见”，取而代之的它究竟怎么样
29日，中国联通宣布，首家全国开通eSIM，这意味着eSIM将大规模走进公众视野。eSIM简单来说，就是电子化的SIM卡，是一个数据文件，可通过网络下载到移动终端。有了它，各种电子产品就能连接上网，接拨电话、发短信等。
手机使用eSIM，能轻松实现双卡双待，而且用户可以同时接入两家甚至三家运营商，语音和数据分别使用不同的号码也可实现。目前，eSIM技术已被应用于可穿戴设备，如智能手表、智能伴侣等，下一步将在车联网、工业物联网等电子产品中得到广泛应用。中国移动在2018年6月宣布，其“eSIM一号双终端”业务于6月1日正式启动，用户通过“一号双终端”业务，可实现手机与可穿戴设备的绑定，共享同一个号码、话费及流量套餐。
市面上一旦开始流行，那么从电话普及开始就陪伴我们的SIM 卡也就功成身退，也意味着移动通信进去了一个新的纪元，你是否会期待呢？
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