以编程方式获得iPhone的运营商信号强度 [英] Programmatically getting the iPhone's carrier signal strength

问题描述

有没有办法使用Objective-C获取iPhone的载体和/或当前的信号强度？我知道如何确定数据连接是否存在，以及该连接是否是wi-fi与蜂窝连接。我也知道您可以通过转到手机应用程序手动将iPhone置于现场测试模式，并拨打＃3001 * 12345 *＃并点击发送。

Is there a way to get the iPhone's carrier, and/or the current signal strength, using Objective-C? I know how to determine if a data connection is present, and whether or not that connection is wi-fi vs. cellular. I also know that you can manually place the iPhone into "field test" mode by going to the phone app, and dialing #3001*12345*# and hitting Send.

推荐答案

你让我好奇，我发现它实际上是 * 3001＃12345＃* （哈希和星星交换过）。

You made me curious and I found out that it's actually *3001#12345#* (hashes and stars exchanged).

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