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苹果4s怎么把信号改成数字
更新时间: 2020-09-24 00:00:00  

1、打开拨号键盘,输入*3001#12345#*,然后按下呼叫按钮。这时就会进入到iOS内置应用Field Test界面。

2、按住电源键,直到出现“滑动来关机”滑块。

3、长按Home键,直到关机滑块消失,手机将回到主屏界面。

4、此时iPhone屏幕左上角信号强度将会一直显示数字,点击可以在两种模式之间切换。

5、如果想恢复,完成步骤1后,按Home键退出即可。

关键词: 苹果 4s 怎么 信号 数字

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