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.

🔹 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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