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eSIM可全国开通！与SIM卡有啥不同，资费一样吗？
source link: https://tech.sina.com.cn/t/2019-03-30/doc-ihsxncvh6725632.shtml
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记者吴涛中新网客户端北京3月30日电29日，中国联通宣布，全国范围内开通eSIM。这意味着eSIM将大规模走进公众视野。eSIM到底是什么，相比普通SIM卡都有哪些优势？什么是eSIM？eSIM简单来说，就是电子化的SIM卡，是一个数据文件
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