How to Include Second Line on Xiaomi: A Step-by-Step Guide

Modern smartphones Xiaomi and Redmi have long ceased to be just devices for calls, turning into powerful multimedia centers, but the basic function of communication remains a priority for many users. The question of how to turn on the second line on the shaomi often arises for those who want to separate personal and work contacts or are looking for a way to save on tariffs of different operators. SIM-maps before configuring advanced features like virtual numbers or call waiting mode.

In this article, we will discuss in detail all available ways to organize the second line, including setting two of the following: SIM-Maps, activation of the service "Second number" from operators and the use of third-party applications. MIUI This allows you to accomplish these tasks in several ways, each with its own advantages and limitations. We will look at the technical nuances, hidden settings and possible problems that you may encounter in the process.

Whether you have a new flagship model or a budget, understanding the principles of communication modules will help you manage calls effectively. The settings interface may vary slightly depending on the firmware version, but the logic remains the same for the entire brand ecosystem. Let's start with the most common and reliable option - using two physical SIM cards.

Activation two SIM-card MIUI

The easiest and most stable way to get a second line is to install an additional physical SIM-Most modern Xiaomi smartphones are equipped with a hybrid slot that allows you to use two nano-SIM or one. SIM Once the card is in the tray, the system automatically recognizes the new module, but it requires manual activation in the menu to work properly.

To get started, you need to go to the settings section for wireless networks, and here you'll see a list of all the SIM cards you've detected. If the second card is not active, there's a switch next to it that you need to move to the "On" position, and it's important to make sure that the second card is the right type of network, especially if you're planning to use mobile Internet.

Often users forget to set up use cases, which leads to confusion: calls may be made from the wrong number from which they were planned. SIM-Cards can be set by default for voice calls, SMS And there's also a "Always Ask" feature that will display a dialog box before each action.

It is worth noting that in the active mode 4G/LTE On both cards, nuances with coverage may occur, since many smartphones support a full-fledged version of the device. 4G Only on one card at the same time, transferring the second to the mode 2G/3G. This is normal behavior for most mid- and low-end chipsets.

Configuring scenarios for using two numbers

After the successful activation of the second SIM card, the user faces the question of the convenience of managing two lines. MIUI It offers flexible tools for sorting contacts and assigning preferred numbers. SIM-a card for calling certain contacts, which eliminates the need to manually select a line each time.

To set up, go to the Phone app and find your call settings, and you can set rules, like always calling your mom from the first SIM and the pizza delivery guy from the second. System logic remembers your last choice for each contact, but mandatory appointments ensure that you don't mix up the numbers at the important moment.

⚠️ Note: When using two active lines, the battery consumption increases by 10-15% If you're in a bad reception zone, it's recommended that you turn off your unused SIM card for energy saving.

Another useful feature is SMS setting, where you can choose which number to send your default messages from or leave a request when you send them, especially for those who use one line for sign-ups and the other for face-to-face communication.

Don't forget the visual identification, in the settings of each. SIM-You can change your name (e.g., "Worker", "Personal") and select a color marker, and these colors will be displayed in the call log and when dialing, which greatly simplifies navigation.

Service "Second number" from mobile operators

If your smartphone has only one physical slot or you don’t want to carry two cards, the “Second Number” service provided by mobile operators is a great solution.This is a virtual line that runs through the phone’s main app or a separate application from the operator, using an Internet connection or call redirection.

The largest operators (the “big four”) offer these services under different names, such as an additional number service or a fully virtual SIM card (eSIM or app). USSD-request or use the operator's personal account.

The main advantages of this approach are that you don't need to have a second physical slot, so you can receive calls and SMS to the main machine, while remaining connected through both channels, and it's ideal for those who need a second number temporarily or only for registration.

When using such services, it is important to consider the quality of the Internet connection, if the network signal is weak, incoming calls to the virtual number may be delayed or not at all, SMS-Confirmation codes from banks and services may not come to all virtual numbers, which is worth checking before activation.

Use of application-definitions and virtual PBX

When built-in smartphone features and carrier services don’t work, third-party apps from Google Play come to the rescue. There are many programs that provide virtual numbers from different countries and cities that work through VoIP (Internet Protocol), Popular services include Zadarma, Telphin, Skype and various number identifiers.

These apps turn your Xiaomi into a full-fledged office phone, and you get a second number that rings over the Internet but displays as a regular call (if the app supports integration with the system call), which allows you to record conversations and use speakerphone without restrictions.

But it has its drawbacks, and the main one is the dependence on Internet speed and battery power. Caller apps often run in the background, consuming resources, and it requires a lot of permissions, including access to microphones and contacts, to be stable, which can raise questions about data privacy.

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To save traffic in online calling apps, adjust the sound quality to “medium” or “saving” if you’re in an unstable 3G coverage zone.

However, for freelancers and entrepreneurs, it is often the only way to have a beautiful city number or a number from another region without buying a separate SIM card.Setting up such applications takes only a few minutes and does not require a visit to the operator's office.

Problems with the definition of the second line and their solution

Despite the fact that the processes are fine, users sometimes face situations when the second line does not work correctly. The phone may not see the second SIM card, drop calls or not send SMS. The first thing to check is whether the card is enabled in the settings and whether the system sees it.

A common problem is network conflict: If one SIM has 4G Only mode and the second one is supposed to work in 2G/3G, there may be failures. Try changing the network type for the main SIM card to 4G/3G/2G (auto).

⚠️ If the phone stops seeing the second SIM-card after falling or getting moisture, do not try to "design" the slot with frequent switches and shutdowns.This can lead to short circuit contacts.

Another common scenario is that the second card doesn't have internet while the first card is actively talking, and this limitation depends on your carrier's support for VoLTE (Voice over LTE) technology and the tariff, so if VoLTE isn't activated, the phone switches to 2G/3G when you call, and the Internet on that card (or the second card if it's in standby mode) may disappear.

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Most second-line problems are solved by resetting network settings (not data!) or updating the firmware to the latest version, where modem errors are fixed.

You can use the engineering menu for deep diagnostics, but it's only for advanced users. Entering code ##4636## allows you to use phone information and run a test. SIM-You can see the signal strength and the registration status of the network in real time.

Features of working with eSIM on Xiaomi

Modern flagships and some mid-segment models of Xiaomi support eSIM technology, a built-in SIM card. This allows you to activate the second line without a physical tray, just by scanning. QR-The process of enabling the second line in this case is completely software-based.

To add eSIM, go to settings SIM-maps and select "Add tariff plan." The camera counts QR-You can store multiple eSIM profiles, but usually only one eSIM profile and one physical one are active at the same time. SIM (or two if the model permits).

The main advantage of eSIM is the convenience for travelers: you can buy a local fare in another country online without changing your physical card, and stay connected by the main number. Switching between profiles takes seconds and does not require retrieving the tray.

Using eSIM makes the question of how to turn on the second line on shaomi as simple as possible, turning it into a matter of a few clicks. However, it is worth remembering that not all operators in your region can support this technology, so pre-checking the terms of the tariff is mandatory.