How to Set Up Default Calls on Xiaomi: The Complete Guide

Xiaomi’s smartphones, which run the MIUI shell or the new HyperOS, offer users a wide range of personalization options. One of the key features that requires a competent configuration is the management of incoming and outgoing calls. Owners of dual-symbol devices often face the need to clearly separate the flow of communication so as not to confuse bills or call from an inappropriate SIM card.

Properly configured communication options not only saves budget, but also significantly improves the usability of the gadget in everyday life. Android provides flexible tools, but in the Chinese manufacturer's brand shell they can be hidden in non-obvious places on the menu. Setting up default calls on Xiaomi is a process that takes only a few minutes, but eliminates a lot of inconvenience in the future.

In this article, we will go into detail all aspects of call configuration, learn how to assign a specific SIM card for voice communication, how to set up redirects and what to do if standard settings do not work. A deep understanding of these mechanisms will help you get the most out of your Redmi or Poco.

Basic configuration of SIM cards for calls

The first priority for any user is to install a priority SIM card. In Xiaomi devices, this is done through a single control center, which simplifies the process. You don't have to look for settings separately for each card, everything is collected in one logical block.

You need to go to the settings menu first. Find a item called SIM-This is where the key switch that determines how the phone dials is, if you want to make calls from a particular card, select the appropriate item in the "Calls" section".

The system allows you to set a strict priority or leave the choice to the user. In the second case, with each dial, a pop-up will appear with a suggestion to choose a SIM card, which is convenient if you often change your tariff plans depending on the direction of the call.

• 📱 Open Settings and select SIM-maps and mobile networks.
• 📞 In the "Calls" block, click on the current selected map.
• ⚙️ Select Always Ask or a specific SIM card from the list.
• ✅ Check that the status of the selected card is active (slider should be enabled).

⚠️ Note: If you install a fixed SIM card for calls, the system will not ask for confirmation when dialing. Make sure that the selected card has a balance or unlimited minutes are connected.

It is important to note that the settings may vary slightly depending on the version of MIUI. In older versions, this item could be simply called "Manage SIM cards." However, the logic remains the same: search for a partition associated with mobile networks.

Configure forwarding and waiting for a call

Redirection and call waiting functions are the de facto standard for business communication. On Xiaomi smartphones, these options are managed through the built-in Phone application. This is a classic Android interface adapted to the shell design.

To activate a redirect, open the call app and click on the three dots in the top right corner. In the drop-down menu, select Settings, then go to the Accounts for Calls section. Here you will see a list of your SIM cards. Once you select the one you want, you will access the extended operator service menu.

The system will offer several options for redirecting calls: unconditional (all calls), busy (if busy), no answer (if not picking up), or unreachable (if not available), these settings are set up on the operator side, but initiated through your smartphone.

Special attention should be paid to the function "Waiting for a call" It allows you to avoid missing important calls while you are talking to another subscriber, when you receive a second call, you will hear a characteristic horn, and you can turn this option on the same menu by ticking the corresponding item.

⚠️ Note: Redirected calls may be charged by the operator as outgoing.Clarify the terms of your tariff plan before activating this feature to avoid unexpected costs.

Use of the USSD-service-management codes

Despite the presence of a graphical interface, many users prefer to use it. USSD-These are short commands that are sent directly to the carrier, and they work consistently on Xiaomi, and they allow you to quickly check the status of services.

To enter the code, open the dialing app and enter a combination that starts with an asterisk and ends with a grille. For example, the *#21# code is often used to check the redirect status. After dialing, press the call button and a system message from the operator will appear on the screen.

With the USSD, you can not only check, but also activate or deactivate services. This is especially useful if the graphical settings menu for some reason does not display current information or is running late. Commands are versatile and work on all models, from budget Redmi to flagship Mi.

Remember, the response from the operator comes in the form of a text message that appears on top of the current screen. If you have Do Not Disturb mode or special filters on, the response window may not appear, in which case check the message log or try to re-enter the command.

Problems with number detector and spam

One of the most annoying problems is spam calls. Xiaomi's built-in mechanisms do a good job of blocking, but they need to be set up correctly. By default, the detector may not be activated or not work properly.

Go to the phone app settings and find the Antispam section, where you can enable hidden number blocking and automatic response for advertising agencies, and it is also useful to connect a database that is updated over the Internet and tags known fraud numbers.

If you want to use third-party applications to determine the number, for example, from Yandex or Kaspersky, you will need to change the default settings.

• 🛡️ Go to Settings. → Annexes → All applications.
• 🔍 Find your application for spam protection in the list.
• ⚙️ Choose Other Permits and Give Access to Phone and Contacts.
• 📞 In the call settings, select the number Definiter and specify the desired application.

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For maximum spam protection, combine Xiaomi’s built-in filter with your carrier’s database, creating a double barrier to unwanted calls.

It often happens that after updating the system, the anti-spam settings are reset, so it is recommended to periodically check this section of the menu.

Adjusting sound and vibration when calling

Customizing your call sound is not only important for comfort, but also to keep an important call in a noisy place. Xiaomi offers advanced audio profile settings.

In the Sound and Vibration section, you can choose a tune for a particular contact or for all calls at once. The unique feature of the shell is the ability to assign different ringtones to each SIM card, which helps you instantly know which number you are calling without looking at the screen.

Pay attention to the vibration settings. You can create your own vibration pattern or choose one. For people with hearing impairments or for use in quiet places (cinema, meetings), Vibration in your pocket is useful, which amplifies the signal if the phone is deep.

⚠️ Warning: Setting too loud or sharp a tune at maximum volume at night can damage your smartphone speaker or scare others. Use night mode or Silence profile at a given time.

Solving Frequent Call Problems

Sometimes users are faced with a situation where the calls do not pass, break down or the phone does not see the network at all, in such cases, you do not immediately panic and bring the device to the service.

The first thing you need to do is check if the flight mode is on, then try rebooting the device. If that doesn't work, remove the SIM card, wipe the contacts with an eraser and paste back in, make sure the card is installed correctly and not damaged.

If the problem persists, try resetting the network settings. This will return the APN settings and preferred network type to factory values.The path to this feature is: Settings → Connection and Sharing → Reset Wi-Fi, mobile networks and Bluetooth.

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Network reset does not delete your personal data (photos, contacts), but deletes stored Wi-Fi passwords from other Bluetooth devices. Be prepared to re-enter passwords.

In rare cases, the cause may be a software conflict.Make sure you have the latest version of MIUI installed.Updates often include patches for modem errors and improved communication stability.

Additional features and hidden functions

Xiaomi’s shell hides a lot of useful features for those who like to dig into settings. For example, you can set up quick answers to incoming calls. SMS-It's convenient when you can't talk, but you want to let the person know you're busy.

There's also a conversation recorder. Unlike many other smartphones, Xiaomi has a built-in recorder that works automatically. You can set up a record of all calls or only certain numbers. Files are stored in the phone's memory and are available for listening right in the call log.

Xiaomi Smart Home devices are also useful for users to integrate calls with smartwatches or bracelets, which can be set up via Mi Wear or Zepp Life, which allows them to see who is calling and drop calls without taking the phone out of their pocket.

• 📼 Automatic recording of conversations is enabled in the settings of the application "Phone".
• 📩 Fast. SMS-Answers are configured in the section "Call settings".
• ⌚ Synchronization with wearable electronics requires Bluetooth enabled.
• 🔊 Loud Communication is available in the Engineering Menu (for advanced speakers).

Customizing all of these settings makes your Xiaomi a powerful communication tool. Don’t be afraid to experiment with settings to find the perfect balance between functionality and usability.