Is your Samsung phone disconnecting from Wi-Fi again and again? Don’t worry — this is a common problem caused by software bugs, battery optimization, or network misconfigurations. The good news is that One UI offers several built-in tools to fix Wi-Fi instability. In this step-by-step guide, we’ll show you how to stop your Samsung phone from dropping Wi-Fi connections frequently.

1. Restart Your Phone and Router

Before diving into advanced solutions, start simple:

  1. Turn off your router and wait about 30 seconds before powering it back on.

  2. Restart your Samsung phone by holding the Power button → Restart.

  3. Once both devices are rebooted, reconnect to your Wi-Fi network.

A quick restart often clears temporary connection errors between your device and router.

2. Forget and Reconnect to the Wi-Fi Network

Sometimes your phone’s stored Wi-Fi configuration becomes corrupted. Reconnecting usually fixes it:

  1. Go to Settings → Connections → Wi-Fi.

  2. Tap the gear icon ⚙️ next to your connected Wi-Fi network.

  3. Select Forget.

  4. Reconnect to the same network by entering your password again.

💡 Tip: If your router supports both 2.4GHz and 5GHz, test both. The 2.4GHz band is more stable for longer ranges, while 5GHz offers faster speed in close range.

3. Turn Off Smart Network Switch (Switch to Mobile Data)

Samsung’s Smart Network Switch or Switch to mobile data automatically toggles between Wi-Fi and mobile data when the signal weakens. This can cause frequent drops.

To disable it:

  1. Open Settings → Connections → Wi-Fi.

  2. Tap the three dots ⋮ in the upper-right corner → Advanced.

  3. Turn off Switch to mobile data or Adaptive Wi-Fi.

This ensures your phone stays connected to Wi-Fi without automatically switching to mobile data.

4. Exclude Wi-Fi from Battery Optimization

Battery-saving features can restrict background Wi-Fi access in One UI.

  1. Go to Settings → Battery → Background usage limits.

  2. Tap Sleeping apps.

  3. Find apps like Settings, System UI, or any critical connectivity app, and remove them from the list.

  4. You can also go to Settings → Apps → (specific app) → Battery → Unrestricted.

This keeps Wi-Fi running consistently, even when the screen is off.

5. Reset Network Settings

If Wi-Fi still disconnects, try resetting your network configurations:

  1. Go to Settings → General management → Reset → Reset network settings.

  2. Tap Reset settings → Confirm.

  3. Reconnect to your Wi-Fi afterward.

This erases all saved networks and Bluetooth connections, fixing many hidden issues.

6. Update Software and Router Firmware

Samsung frequently releases patches that fix network-related bugs.

  1. Go to Settings → Software update → Download and install.

  2. Install the latest One UI version available.

  3. Log in to your router’s admin panel and check for firmware updates there as well.

Both updates help improve device compatibility and performance.

7. Advanced Fix: Change DNS Settings

To improve stability, switch to a more reliable DNS:

  1. Go to Settings → Connections → Wi-Fi.

  2. Tap your Wi-Fi network → Advanced.

  3. Under IP settings, change from DHCP to Static.

  4. Enter:

    • DNS 1: 8.8.8.8

    • DNS 2: 8.8.4.4

Save and reconnect.

8. Final Tip

If your Samsung still disconnects, try a factory reset after backup, or have the phone checked at a Samsung Service Center — it might be a hardware antenna issue.

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