iPhone12 来电话的时候，信号就会满格，立刻挂了，信号就回到 1~2 格 - V2EX
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c0011
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iPhone12 来电话的时候，信号就会满格，立刻挂了，信号就回到 1~2 格

  •   
  •   c0011 Nov 7, 2020 2475 views
    This topic created in 2024 days ago, the information mentioned may be changed or developed.

    我发现个问题，iPhone12 手机平时待机信号是 1-2 格，当用另外一个手机给它打电话后，它收到来电的瞬间信号就会变满格，立刻挂断后，信号立刻会恢复到 1-2 格。

    运营商是联通，手机设置为 4G 模式。 你们也这样吗？

  • 信号
  • iphone12
  • 4G
  • 立刻
    5 replies
    Awes0me
        1
    Awes0me  
       Nov 7, 2020 via iPhone
    联通打电话会掉到 3g 吧
    billytom
        2
    billytom  
       Nov 7, 2020 via iPhone
    楼上正解
    c0011
        3
    c0011  
    OP
       Nov 7, 2020
    @Awes0me 还真是，因为开着 wifi，每一看见 3G 标志。这是正常的吗？移动不这样啊？
    BrettD
        4
    BrettD  
       Nov 7, 2020 via iPad
    @c0011 因为移动支持 VoLTE，通话不用掉 3G
    tracedocting
        5
    tracedocting  
       Nov 7, 2020 via iPhone
    联通也支持 VoLTE，手机营业厅可以开通
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