Unstructured Supplementary Service Data (USSD), sometimes referred to as " quick codes " or " feature codes ", is a communications protocol used by GSM cellular telephones to communicate with the mobile network operator 's computers.

2025年1月17日 · In this article, we’ll jot down a comprehensive list of Android secret codes and USSD codes that you can use to access a range of back-end settings, hidden features, and information on your Android smartphone or tablet from brands like Samsung, OnePlus, Xiaomi, Vivo, Realme, Oppo, Nokia, etc.

2022年8月14日 · Global System for Mobile Communication (GSM) and Unstructured Supplementary Service Data (USSD) are cell phone codes or smartphone codes that have been used since the early days of mobile telephones and cell phones. With the individual GSM codes you can, for example, change services such as call forwarding, mailbox or SIM card settings.

2024年7月12日 · An Unstructured Supplementary Service Data (USSD) code is a code that is programmed into your SIM card or your cell phone to make it easier to perform certain actions. When you know the code for what you want to do, you can run it with a few simple taps.

2024年4月27日 · 什么是隐藏的 USSD 代码？ 隐藏的 USSD 代码是一种特殊代码，可以解锁手机上的额外功能。 它们可以显示详细的网络信息或让您测试手机的不同部分。 是否有适用于所有手机的通用 USSD 代码？ 虽然许多 USSD 代码在不同的手机上广泛使用，但并非所有代码都是通用 ...

USSD (Unstructured Supplementary Service Data) is a Global System for Mobile Communications (GSM) protocol that is used to send text messages. USSD is similar to Short Message Service (SMS). USSD uses codes made up of the characters that are available on a …

2024年10月11日 · USSD codes, also known as “quick codes” or “feature codes,” are special character sequences that can be dialed on your Android phone to access hidden features or information. These codes are often used by technicians and developers, but anyone can use them to unlock various functions on their device.

USSD 代码是一系列用于与移动电话通信的四个按键。 它们旨在促进移动电话上特定服务的使用，例如拨打电话或请求信息。 USSD 代码还用于配置您的电话和访问某些服务。

USSD is a fundamental service that all GSM network operators support to enable the exchange of menus (or strings) between a subscriber and an operator. The acronym USSD stands for Unstructured Supplementary Service Data. It does not require the device to be connected to the internet, which enables it to function on even the most basic phones.

2024年12月12日 · USSD codes, or Unstructured Supplementary Service Data codes, are a form of communication protocol used by mobile phones to interact directly with their network operator. These codes, usually starting with an asterisk (*) and ending with a hash (#), are typed into your phone’s dialer and executed by pressing the call button.