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反转！中国电信：使用5G网络或需更换SIM卡
source link: https://tech.sina.com.cn/roll/2020-05-13/doc-iirczymk1450629.shtml
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随着5G网络的加快部署，与市面上越来越多5G手机的涌现。开始有更多的消费者开始选用5G网络套餐。此前，三大运营商宣称使用5G服务，用户不换卡、不换号，只需要拥有一部5G手机。并且，三大运营商还分别推出了5G套餐，用户订购之后就可直接使用此前
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