How to Stop Xiaomi from Switching to Mobile Data Automatically (MIUI Guide)

 One of the most common complaints among Xiaomi, Redmi, and POCO users is that their phone automatically switches from Wi-Fi to mobile data. While MIUI is designed to maintain a stable internet connection, this feature can be frustrating when it disconnects Wi-Fi unnecessarily.

Did you know? For a complete guide on this topic, check out the Xiaomi Learning Hub and explore related tips in the Connectivity & Network Topic Hub.

🔹 1. Understand Why MIUI Switches Networks

MIUI’s Wi-Fi Assistant feature monitors your connection and automatically switches to mobile data when Wi-Fi seems unstable. While this can be useful in theory, in practice it often causes:

  • Frequent Wi-Fi disconnections

  • Interruptions during streaming or downloads

  • Unintended mobile data usage, increasing your bill

The solution is simple: disable automatic network switching.

🔹 2. Disable Automatic Data Switching

Follow these steps:

  1. Open Settings on your Xiaomi device.

  2. Tap Wi-Fi.

  3. Scroll to Wi-Fi Assistant (on MIUI 13+ it may appear under “Additional settings”).

  4. Find “Select best networks automatically” or “Switch to mobile data when Wi-Fi is unstable”.

  5. Toggle it off.

Menu path:
Settings › Wi-Fi › Wi-Fi Assistant › Switch to mobile data automatically (disable)

After this, your phone will remain on the Wi-Fi network, even if the signal fluctuates.

🔹 3. Adjust Battery Optimization

MIUI battery saver may interfere with network stability. To prevent it from affecting Wi-Fi:

  1. Open Settings › Battery › Battery saver.

  2. Tap the app that uses the internet heavily.

  3. Select No restrictions.

Avoid Ultra Battery Saver mode, as it can disable background Wi-Fi entirely.

🔹 4. Update MIUI System

Network-related bugs are often fixed in system updates. To check:

Settings › About phone › MIUI version › Check for updates.

Installing the latest update ensures better network stability and prevents automatic data switching errors.

🔹 5. Reset Network Settings

If your phone still switches to mobile data, try resetting all network configurations:

  1. Go to Settings › Connection & sharing.

  2. Tap Reset Wi-Fi, mobile networks, and Bluetooth.

  3. Confirm and reconnect to your Wi-Fi network.

This removes corrupted network profiles that can trigger unwanted mobile data switching.

🔹 6. Optional: Forget and Reconnect Wi-Fi

Sometimes a simple reconnect fixes hidden issues:

  1. Open Settings › Wi-Fi › [Your Network].

  2. Tap Forget network.

  3. Re-enter your password to reconnect.

This ensures your Xiaomi device registers the Wi-Fi network as stable.

🔹 Final Thoughts

Disabling automatic switching to mobile data on your Xiaomi, Redmi, or POCO phone stops random Wi-Fi dropouts and prevents unexpected data usage. By combining this with battery optimization adjustments and the latest MIUI updates, your phone can maintain a reliable, uninterrupted Wi-Fi connection.


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