本教程适用于
产品型号:iPhone 12
系统版本:iOS 14.6
型号:iPhone 12
系统:iOS 14.6
软件:
可能是SIM卡未正确插入,或者SIM卡或手机卡插槽损坏。您可以尝试插入其他手机卡,然后将手机的SIM卡插入其他手机看看是否有信号。如果卡槽损坏,建议更换卡槽。如果SIM卡损坏,请前往营业厅更换SIM卡。
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