2020年7月29日 · In reality, the results of dialing “*#21#” do not show whether or not an iPhone has been compromised in such a manner. The featured sequence of special characters and numbers is one of several interrogation codes, also known as feature access codes, that allow users to quickly check iPhone functions, according to USA Today.

2022年12月8日 · Call *#21# on your iPhone to get a device interrogation report, but can this reveal an FBI wiretap?

2020年8月17日 · It's actually *#21# All that code does is tells you if call forwarding is on or off. There's a whole bunch of things you can do with these secret "codes." they are harmless as your phone isn't being "tapped." They are simply giving you the status of things on your device.

2024年8月19日 · *#21# is a specific Unstructured Supplementary Service Data (USSD) code that, when entered, allows you to check if call forwarding is enabled on your mobile device. Think of it as a flashlight, letting you peek into a specific setting on your phone.

操作方法是拨号键盘输入【*#21#】，然后点击拨号键，即可进入查询界面，你想要知道的都会一一显示在列！ 是不是很多人有两张手机卡，然后也会有两个 iPhone ，如果有人给你其中一个张卡打电话，刚好这个手机不在身上，而是另一个手机在身上，你该怎么办呢？ 这个时候，设置语音呼叫转移功能就显得很有必要了，当你只带一部手机出门的时候，就不怕另一个手机的电话漏接了，具体操作如下： 拨号键输入【**61*转移电话号码*秒数#】，然后按绿色拨号键，即设置成 …

2020年7月23日 · You will need to ask your carrier about it; the code you have typed in and called, it is to enable/disable services that they manage.

2020年7月23日 · We rate the claim that dialing *#21# on an iPhone or Android device reveals if a phone has been tapped FALSE because it is not supported by our research. A Google spokesperson, tech websites...

这是呼叫转移代码。在手机拨号盘中输入**21*电话号码#，然后按下拨号键，会开启呼叫转接，这样所有播到你手机上的电话就全部转移到你输入的手机号上了。 ps：1.有些手机可能不太兼容，很正常，但大多数是可以的。2.仅限呼叫，短消息无法转移。

2025年3月14日 · What is the meaning of the ##21# code? When you dial ##21# on your phone, what it does is erase all your call forwarding. If you have been looking for a way to disable or wipe out any existing call forwarding on your line, this is the code to dial.

2025年1月16日 · Your iPhone has secret codes you can plug into the dialer to access hidden options. These codes "interrogate" the phone to find and change various settings or provide information such as your cellular signal strength.