could not activate cellular data network 无法激活蜂窝数据网络 Apple has finally connected the iphone to the fastest cellular data network, called lte, and data downloads and uploads just fly, even when you aren't on wi-fi. 苹果终于让iphone得以接入现在速度最快的蜂窝数据网络lte，即使你没有接入wi-fi时，数据的下载和上传的速度也飞一般地快。
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