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中国联通开始关闭 2G 网络，并要求市场线严禁发展 2G 业务

 6 years ago
source link: https://cn.technode.com/post/2018-04-12/unicom-2g-canceled/?amp%3Butm_medium=referral
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中国联通开始关闭 2G 网络，并要求市场线严禁发展 2G 业务

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