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iPhone No Service with warning icon

Discussion in 'Programming/Internet' started by superquanganh, Oct 8, 2018.

  1. I have an iPhone 7, after updating iOS 12, it loses cellular signal, displays No Service with a warning icon. And an alert said:

    Cellular update failed
    Your iPhone cannot make and recieve calls or access cellular data until it has been updated

    So what caused this problem? I searched on Google and only get 1 post about this but no good answer of how to solve it.


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