How to Set Up a Parallel Call on Xiaomi: A Complete Guide to Secrets MIUI

Parallel call on Xiaomi smartphones is one of those hidden features MIUI, It can change the way you interact, and imagine that you're talking to a colleague about an important issue, and at that point, a client is calling, and you don't have to give up the first conversation or ask them to call you back. Just taking a second call, switching between people, or even merging them into a conference, sounds like a dream, and that's a reality for most Redmi devices, POCO mi.

But it's not that simple. Depending on the model of the smartphone, the version. MIUI And even the operator, the setup process may be different, and it's available out of the box, and it needs to be activated through an engineering menu or third-party apps. In this article, we’ll look at all the possible ways to enable a parallel call on Xiaomi, including hidden settings, bypassing carrier restrictions, and solving typical problems. You’ll learn which models support the feature, how to set it up correctly, and what to do if something goes wrong.

What is a parallel call and why is it needed?

Parallel call (or conference call) is the ability to communicate with multiple subscribers over the phone at the same time.

• 📞 Receiving a second incoming call during a conversation (without resetting the first one).
• 🔄 Switching between two people or combining them into one conversation.
• 📱 Use of the main and second SIM-Simultaneous call cards (on supported models).
• 🎧 Connecting additional devices (headphones, speakers) for a comfortable conference.

The function is particularly useful for:

• 💼 Business users who often coordinate multiple calls.
• 👨‍👩‍👧‍👦 Couples where a single phone is used by multiple people.
• 🚗 Drivers who need to communicate with the dispatcher and the customer at the same time.
• 🌍 Travellers who use two SIM-maps (local and home).

However, there are nuances: not all operators support this feature, and on some tariffs it can be paid. For example, MTS and Beeline turn it on by default on most tariffs, and Tele2 and MegaFon sometimes require an additional option to be connected.

What Xiaomi models support parallel call

The parallel call function depends on two factors: hardware support (modem and processor) and version. MIUI. Here is a complete list of devices on which the function works stably:

If your model isn't on the list, it doesn't mean the feature isn't exactly working. 9A You can activate a parallel call via #4636##, but it will only work in mode. 2G. And POCO M4 Pro function appears after updating to MIUI 13.5.

⚠️ Note: On smartphones with a MediaTek Helio G processor (e.g., Redmi) 9C, POCO C31) parallel call can cause communication to break when switching between subscribers!

Configuring a parallel call in MIUI

If your model supports the function, you can turn it on through the standard settings.

1. Open the phone application (pipe icon).
2. Click on the three dots in the top right corner and select Settings.
3. Go to the Calls section → Additional settings.
4. Find Parallel Calls (or Conference Calls) and activate the switch.
5. If there is no item, check the section. SIM-maps and mobile networks → Settings SIM1/SIM2 → Voice calls.

On some firmware (e.g, MIUI 12.5 for Redmi Note 10, the path may be different:

Settings → Applications → Phone → Permissions → Additional settings → Parallel calls

If the gray function is not activated, the problem may be:

• 📵 Operator – Check if your tariff supports conference call.
• 📱 Versions MIUI — Update your firmware to the latest stable version.
• 🔧 Modem settings – activation via the engineering menu is required (see next section).

Make sure SIM-The card supports conference call|

Update MIUI to the latest version|

Check balance (some operators block function when negative balance is in place)|

Reboot your smartphone before setting up-->

Activation via the Engineering Menu (for hidden functions)

If the standard settings didn’t work, you can try to enable a parallel call through an engineering menu, which works on most Qualcomm Snapdragon processor devices (e.g. Xiaomi). 12T, POCO F4 GT).

Instructions:

1. Open the phone app and enter the code: ##4636##
2. In the menu that opens, select Phone Information (or Phone Information).
3. Scroll down to the Set preferred network type section and select LTE/GSM auto (PRL).
4. Go back to the main menu and select Modem Settings.
5. Find Enable VoLTE and Enable ViLTE, activate both.
6. Reboot your smartphone.

After restarting, check for the feature in your phone's settings. If you still don't have Parallel Calls, try the alternative code:

##86583##

This code opens the VoLTE Settings menu, where you can manually enable support for voice calls on the Internet. 4G — This often unlocks conference calls.

⚠️ Attention: Change of settings in the engineering menu can lead to loss of network or incorrect operation of calls. If after manipulation the signal is lost, reset the network settings in Settings. → SIM-maps and mobile networks → Resetting settings.

Configure a parallel call for two SIM-map

If your Xiaomi supports two of your SIM-So you can set up parallel calls so that they work on both lines:

1. Go to Settings. → SIM-maps and mobile networks.
2. Choose the first one. SIM-Map and activate voice calls through LTE (VoLTE).
3. Repeat step 2 for the second. SIM-map.
4. Return to your phone settings and enable Parallel Calls (see section above).
5. In the Call Settings section, select Always Ask in the Select SIM-card.

Now, when you call in, you call one. SIM-You can take a second call to another line:

• 🔄 Switching between calls only works within one SIM-To connect subscribers from different SIM, You will need a third-party app (e.g. Google Phone).
• 📶 The quality of the communication may be reduced if both SIM network 4G simultaneously.
• 💰 Operators can charge for conferencing between different networks.

On Xiaomi 13 Ultra and POCO F5 Pro has an additional Dual VoLTE feature that allows both of them to be used. SIM-maps simultaneously work on the network 4G. To activate it:

##845##

In the menu that opens, select Enable Dual VoLTE and restart the device.

💡

If, after setting up two SIM-The Internet is missing on one of them, check the priority of the network in Settings → SIM-map → Network priority. Set up a problem area. SIM regimen 3G, then turn it on again 4G.

Typical Problems with Parallel Challenges

Even after you set it up properly, you can have failures, and here are the most common problems and solutions.

If none of these methods worked, try resetting your network settings:

1. Go to Settings. → SIM-maps and mobile networks.
2. Select Network Settings Reset (or Wi-Fi, Mobile Network, and Bluetooth Reset).
3. Confirm the action and restart the smartphone.

After resetting, all mobile network settings will return to factory settings, and you will need to reconfigure VoLTE and parallel calls.

⚠️ Attention: On some firmware MIUI Global (for example, for the European region) the function of parallel calls can be disabled at the software level. MIUI China or custom firmware (e.g. Pixel Experience).

Third-party applications for enhanced capabilities

If standard means MIUI You don't like it, you can use third-party conferencing apps, and they offer additional features like recording conversations, transcription, or integration with other people. CRM-system.

Top.-3 Applications for parallel calls on Xiaomi:

• 📱 Google Phone is the official Google app with conference support for up to 5 subscribers, and works on all Android 10 devices.+. Download to Play Market.
• 🔗 Truecaller -- in addition to the number detector, there's a built-in group call feature that supports up to 7 members.
• 💼 Zoiper – Professional Business Solution with Support SIP-Telephony and multichannel conferences. Download in Play Market.

To set up Google Phone:

1. Install the app and make it the default app for calls.
2. Open the Settings. → Calls. → Conference liaison.
3. Enable the option to combine calls.
4. During the conversation, click Add Call, then Combine.

Advantages of third-party applications:

• ✅ It works even if the operator does not support conference calls.
• ✅ Additional functions: recording, transcription, integration with the calendar.
• ✅ Support for more participants (up to 10 in Truecaller).

Disadvantages:

• ❌ Can drain the battery faster due to background activity.
• ❌ Some functions (such as recording calls) are prohibited by law in some countries.

💡

Third-party applications are a good alternative if standard tools are used. MIUI They may conflict with system calls, however, so test them on short calls before important conversations.

FAQ: Frequent Questions About Simultaneous Calls on Xiaomi