How to turn Wi-Fi and mobile Internet on at the same time on Xiaomi: the complete guide

Simultaneous use of Wi-Fi and mobile Internet on Xiaomi smartphones is a feature that can significantly expand the capabilities of your device. 4G/5G, At the same time, you can stay connected to the local network to access printers, NAS-drives or smart devices, but in the standard settings. MIUI This option is often hidden or disabled by default.

In this article, we’ll discuss how to activate simultaneous Wi-Fi and mobile data on Xiaomi, which models support this feature, and how to avoid typical setup errors, and why sometimes a smartphone refuses to connect to two networks at once and how to fix this without resetting.

Why Xiaomi is blocking Wi-Fi and mobile internet use at the same time?

The manufacturer limits this function for several reasons:

• 🔋 Battery savings: Two active communication modules (Wi-Fi and mobile data) consume significantly more power, which reduces battery life.
• 📶 Routing conflicts: Without the right traffic setup, the device can “muttle” through which channel to send data, leading to lags or connection breaks.
• 🛡️ Security: In some regions, mobile operators prohibit the use of two networks simultaneously due to the risk of traffic fraud.
• 📱 Firmware limitations: On Xiaomi budget models (e.g. Redmi) 9A POCO C31) The function can be disabled at the core level MIUI.

However, on most modern Xiaomi smartphones (Redmi Note 10/11/12 series, Poco X/F, Mi 11/12/13) this option can be enabled manually - either through hidden settings or using third-party tools.

Method 1: Enable through the Engineering Menu (for advanced users)

If your Xiaomi is running MIUI 12/13/14, you can activate the simultaneous operation of networks through an engineering menu, which is suitable for models based on Qualcomm Snapdragon processors (for example, Redmi Note 10 Pro, Poco F3).

Warning: Changes to the engineering menu can cause the network to run unstable. Create a backup of the settings before you start.

⚠️ Attention: Incorrect settings in the engineering menu may disrupt the communication module. If the network disappears after the changes, reset to factory settings (Settings) → The phone. → Resetting settings).

Instructions:

1. Open the Phone app and type the combination: ##4636## Some models may require code ##36446337##.
2. In the menu that opens, select Phone Information (or Phone Information).
3. Scroll down to the Set preferred network type block and make sure LTE/NR5G (for 4G/5G) is selected.
4. Go back to the main menu and select Wi-Fi information.
5. Find the Wi-Fi + Cellular (or Concurrent Wi-Fi) setting and set the Enabled value.
6. Reboot your smartphone.

After you reboot, check the networks: connect to Wi-Fi and activate mobile data. If the indicators of both connections are on in the notification panel, the setup was successful.

Connect to Wi-Fi | Enable mobile data | Run Speedtest for each network | Check ping on both networks-->

Method 2: Use the Double Internet application (without root)

If the engineering menu is not available or the changes are not saved, use the third-party Dual Internet app (or similar: Network Signal Guru, Internet Speed Master). These utilities do not require root rights, but can request permission to change system settings.

The app works by switching traffic routes, where some data goes through Wi-Fi, some goes through a mobile network, and this is useful for example:

• 🎮 Online Games (Low Ping by Po) 4G/5G + stability of Wi-Fi).
• 📥 Simultaneously download files on both networks.
• 🔄 Backups (if one network falls off, traffic will automatically switch to the other).

Instructions for setting:

1. Download Dual Internet from Google Play.
2. Launch the application and give access to the Network Settings.
3. In the main menu, activate the Enable Dual Internet switch.
4. Select a priority network for different types of traffic (e.g. Wi-Fi for downloads, 4G for games).
5. Click Apply and confirm the changes.

⚠️ Note: Some applications (e.g., banking or instant messengers) may block dual internet because of security policies, in which case add them to the exceptions in the Dual Internet settings.

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If the speed has dropped after activation of the “double Internet”, try to turn off the device. VPN (if it is on or replaced DNS-server 1.1.1.1 or 8.8.8.

Method 3: Configure via ADB (for power users)

If the previous methods did not work, you can turn on the function through ADB-This method requires connecting the smartphone to the computer and installing Google's Platform Tools.

The advantage of the method is that the changes are applied at the system level and are not reset after rebooting, but it is only suitable for devices with an unlocked bootloader.

Instructions:

1. Turn on USB Debugging on your smartphone (Settings → About Phone → MIUI version – press 7 times, then go back to Additional Settings → For Developers).
2. Connect your phone to your PC and open the command line in the folder with the platform-tools.
3. Enter the command to check the connection: Adb devices Make sure your device appears in the list.
4. Execute the command to activate simultaneous Wi-Fi and mobile data: adb shell settings put global wifi_mobile_data_switch 1
5. Reboot your smartphone.

To return the standard settings, use the command:

adb shell settings put global wifi_mobile_data_switch 0

How do you know if both networks are working at the same time?

To make sure that Wi-Fi and mobile internet are active in parallel, follow the following steps:

1. Connect to Wi-Fi and turn on mobile data.
2. Open your browser and go to whatismyipaddress.com. Remember or write down yours. IP-address.
3. Turn off Wi-Fi (leaving only mobile data) and update the page. IP must change.
4. Turn Wi-Fi back on. If the IP matches the mobile network, it works (the traffic is going through 4G/5G). If the IP is back on Wi-Fi, check the settings again.

For more accurate diagnosis, use the NetMon or Network Signal Info app, which shows active connections in real time.

Typical problems and their solutions

Even after successful setup, users face difficulties. Consider the most common:

• 🔌 Mobile data is turned off when connecting to Wi-Fi Solution: Check if the option Automatic switch to Wi-Fi is activated in Settings → SIM-maps and mobile networks → Transfer data. Turn it off.
• 📵 No badge. 4G/5G in the status bar Solution: Reboot your smartphone or manually select the network type in Settings → SIM-map → Network type (install) 4G (preferably 5G).
• 🔄 Traffic only goes through Wi-Fi Solution: In Dual Internet, set a routing rule: Applications → Choose. → Assign a network. For example, assign YouTube mobile data and Chrome Wi-Fi.
• 🔋 Fast battery discharge Solution: Enable power saving mode for background applications (Settings) → Battery → Energy saving for applications or use double internet only when necessary.

⚠️ Attention: On some firmware MIUI (For example, in Chinese versions, the simultaneous Wi-Fi and mobile data function can be blocked at the kernel level, in which case only the flashing to the global version or the installation of custom software (for example, LineageOS) will help).

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On most modern Xiaomi (MIUI 13+), Wi-Fi and mobile data are enabled through an engineering menu or applications like Dual Internet. ADB and root rights are only required for old or budget models.

Alternative Ways: Using VPN and Routing

If your smartphone does not support simultaneous connection to two networks, you can bypass the restriction by using the VPN-This method is suitable for devices where it is not possible to activate the function in standard ways.

The idea is that you create a virtual network that tricks the system into using both channels.

• Annex VPN-client (e.g. OpenVPN or WireGuard).
• Server with support for policy-based routing (you can rent a cheap VPS).
• Tasker application for switch automation.

Step-by-step:

1. Set up OpenVPN and set up a connection to yours VPN-server.
2. In the configuration file VPN Add the line: route-nopull route 0.0.0.0 192.168.0.0 net_gateway route 192.168.0.0 255.255.255.0 wifi_gateway (substitute 192.168.0.0 to the address of your local network).
3. Turn on the VPN and check routing through the adb shell ip route command.
4. Set up a rule in Tasker: when connecting to Wi-Fi, automatically start a VPN.

This method is more complicated than the previous ones, but allows you to flexibly manage traffic even on devices with strict restrictions.

FAQ: Frequent questions about simultaneous Wi-Fi and mobile Internet on Xiaomi