Setup calls on Xiaomi Redmi: a complete guide

Modern Xiaomi Redmi series smartphones offer users a wide range of telephony management capabilities that go far beyond simple dialing. MIUI (HyperOS in new models allows you to finely adjust the parameters of incoming and outgoing connections, which is especially important for business people and those who use several different types of connections. SIM-The correct configuration of these parameters helps to save budget, maintain confidentiality and avoid missing important calls even when you do not have a network.

Device owners often face the need to hide their number, set up a redirect to another phone, or activate the second call waiting feature without knowing that all of these options are hidden in the system menus. Android standard settings can be changed by the manufacturer, so finding the right switches sometimes turns into a quest. In this article, we will take a detailed look at all aspects of the voice configuration so that you can fully control your communication experience.

Particular attention should be paid to the two SIM-The logic of redirecting and identifying a subscriber in dual SIM mode has its own nuances, ignoring which can lead to unexpected expenses or missed calls. Let’s start with the basic settings that are available to each user immediately after unpacking the device.

Basic configuration SIM-maps and network preferences

The first step in setting up calls on Xiaomi Redmi is to organize your work properly. SIM-The system allows you to assign a specific Symbol for voice calls by default, which eliminates the need to select a network for each dial. → SIM-Maps and mobile networks, where the traffic and calls control panel opens.

You can set a priority here. SIM-If you choose the "Always Ask" option, the phone will need to know which card to use each time, which is convenient if the data plans vary greatly, but can be annoying with frequent calls. More flexible setting allows you to set a smart choice when the device itself offers a card with better coverage or the remaining minutes.

It is important to note that in the network settings section, you can also force the network type to be selected. Although this is more related to the quality of communication, the choice of 4G or 5G mode affects the speed of establishing a connection (VoLTE). If your operator supports VoLTE technology, make sure that the switch is activated, as this provides sound and the ability to use the Internet during a conversation.

⚠️ Note: When changing priority SIM-Old redirect settings may not be copied automatically.Always check forwarding status after changing the main call card.

Configuring subscriber identification and hiding the number

One of the most popular features is the ability to hide your number when an outgoing call is made. On Redmi smartphones, this is done through the standard call setup interface, which broadcasts commands directly to the operator network level. To activate this feature, go to the Phone app, click three dots in the corner, and select Settings → Call Accounts (or Call Settings).

In the menu that opens, find "Additional Settings" or "Subscriber Identifier" immediately. There are three options available here: "Show number", "Hide number" and "Default (network settings)" The option to Hide number will replace your ID with "Unknown number" or "Hidden number" on the screen of the receiving subscriber.

Please note that this setting is global for the selected SIM-If you only need to hide the number for one particular call, it's not convenient to use the settings menu, because you have to constantly switch modes. USSD-codes or prefixes that we will discuss below.

• 📞 Show the number - standard mode, your number is visible to all subscribers.
• 🕵️ Hide the number – your ID is not transmitted to the network, the call is defined as anonymous.
• 🔄 By default – the setting prescribed in your tariff plan from the operator is used.

💡

Some carriers block the ability to hide the number at the network level. If the setting in the phone does not work or resets, contact your carrier's support team to clarify the availability of the service.

Managing forwarding and waiting for a call

The redirect function allows you to redirect incoming calls to another number if you can’t answer. On Xiaomi Redmi, this process is managed through the Call Settings menu → Redirect. The system offers several scenarios: forwarding when busy, in case of no response, if the phone is turned off or not available, and unconditional forwarding of all calls.

When either of these modes is activated, the phone sends a request to the operator's server, and the success of the operation is confirmed by a pop-up notification. It is important to understand that forwarded calls are often charged by the operator as outgoing calls on your part, so the economic feasibility of such a setup depends on the terms of your tariff.

In parallel with the redirect, the Waiting Call feature is useful, and it allows you to keep important calls from missing during a conversation, and when this option is on, during the conversation, you will hear a characteristic beep that signals a second incoming call, so you can put the first person on hold and answer the second person, or you can reset the second call.

⚠️ Attention: Call waiting can be disabled at the default network level. If the switch in the phone menu does not activate or immediately returns to its original position, send it to the phone. USSD-activation code of your service provider.

Use of the USSD-codes

Although the graphical interface MIUI It's convenient, it doesn't always display all the services available, or it may not work properly because of the firmware. USSD-Codes are special commands that are sent directly to the operator's network, and they allow you to manage services faster and more reliably than through the settings menu.

To enter the code, open the Phone app and type the combination in code#. For example, to check the redirect status, the code #21# is often used, and to disable all types of redirects, ##002#. GSM-It works on any smartphone, including Redmi.

# Codes for managing call waiting:


*43# - Activation of the service




#43# - Deactivation of the service




*#43# - Status check

Code use is especially important when the phone menu is stuck or does not display the current status of the service. Once the code is entered, the network response comes in the form of a text message on the screen, which is the most reliable source of information about the current state of your communication services.

Table of popular codes for configuring calls

For your convenience, we've organized the most useful commands that will help you set up your phone quickly, save this table or add codes to your contacts for quick access.

Blocking Unsolicited Numbers and Anti-Spam

Xiaomi’s built-in tools provide powerful tools to combat spam and unwanted calls. Unlike standard Android, it’s expanded and integrated with cloud databases. To access the settings, go to the Security app (green zipper icon) and select Antispam or Blacklist.

You can set up locks based on different criteria, whether they're hidden numbers, numbers from other regions, or specific contacts, and you can create rules, like locking all numbers that start with a specific prefix, which is especially useful for dealing with robotic callers.

• 🚫 Blacklist – manually adding specific numbers from which calls will be blocked.
• 🤖 Smart antispam – Automatically locking numbers labeled as spam by other users.
• 🌍 Region-Blocking – Banning calls from certain countries or cities where you have no contacts.

⚠️ Attention: When you turn on aggressive anti-spam filters, there is a risk of missing an important call from a new customer or delivery service whose number is not yet entered in the databases".

💡

The combination of a built-in blacklist and cloud-based anti-terror database provides maximum protection, but requires periodic checks of the lock log to avoid missing important calls.

Frequently Asked Questions (FAQ)