How to Fix Samsung Galaxy WiFi Issues (One UI 6 & 7 Troubleshooting Guide)


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Introduction

A stable WiFi connection is crucial for fast browsing, streaming, and app updates on your Samsung Galaxy phone. However, even the latest devices running One UI 6 & 7 can experience WiFi problems — including frequent disconnects, slow speeds, or inability to connect to networks.
This guide provides step-by-step solutions for every common WiFi issue, along with exact menu paths, so you can restore a reliable connection on your Galaxy phone.

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

Step-by-Step Guide

Step 1: Restart Your Phone and Router

The simplest fix often resolves connectivity issues:

  1. Turn off your Samsung Galaxy phone → Wait 10 seconds → Turn it on

  2. Restart your router → Wait 30–60 seconds for it to fully reboot

📍 Menu path (for phone restart):
Press and hold Side Key → Tap Restart → Confirm

💡 Tip: Restarting resets network settings temporarily and clears minor glitches.

Step 2: Toggle WiFi Off and On

Sometimes, reconnecting fixes minor network glitches:

  1. Swipe down from the top → Tap WiFi icon to turn off → Wait 5 seconds → Turn it on

  2. Connect to your preferred network again

Step 3: Forget and Reconnect to Network

If a specific network is problematic, refreshing the connection helps:

  1. Go to Settings → Connections → WiFi

  2. Tap the gear icon next to the network → Tap Forget

  3. Tap the network again → Enter the password → Connect

📍 Menu path:
Settings → Connections → WiFi → Select Network → Forget → Reconnect

Step 4: Check Airplane Mode

Airplane mode disables all wireless connections:

  1. Swipe down → Check Airplane mode toggle

  2. If enabled → Tap to disable

Step 5: Reset Network Settings

This resets all WiFi, mobile data, and Bluetooth settings without affecting personal data:

  1. Open Settings → General Management → Reset

  2. Tap Reset network settings → Confirm

  3. Reconnect to WiFi networks afterward

📍 Menu path:
Settings → General Management → Reset → Reset network settings → Confirm

Step 6: Ensure Software is Up to Date

WiFi issues can result from software bugs:

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

  2. Install any pending updates

💡 Tip: Also update apps from Google Play Store and Galaxy Store to avoid app-specific connectivity issues.

Step 7: Toggle Advanced WiFi Settings

One UI 6 & 7 includes options that can affect WiFi performance:

  1. Open Settings → Connections → WiFi → Advanced

  2. Options to check or toggle:

    • WiFi Power Saving Mode → Off

    • Keep WiFi on during sleep → Always

    • Switch to mobile data automatically → Off (prevents sudden disconnections)

Step 8: Check Router and Network

If multiple devices experience slow or no connection, the issue might be with your router:

  • Ensure firmware is up to date

  • Check SSID and password

  • Move closer to the router or reduce interference from walls/devices

  • Change WiFi channel in router settings if multiple networks interfere

Step 9: Safe Mode Troubleshooting

If WiFi works in Safe Mode, a third-party app is likely causing the issue:

  1. Press and hold Power button → Tap Power off → Tap Safe mode

  2. Test WiFi connection

  3. If stable → Uninstall recently installed apps one by one to identify the culprit

📍 Menu path:
Press & hold Side Key → Power off → Tap Safe Mode → Restart in Safe Mode

Step 10: Advanced Options (Static IP / DNS)

For persistent connectivity issues:

  1. Go to Settings → Connections → WiFi → Gear icon → Advanced

  2. Select IP settings → Static

  3. Manually enter:

    • IP address → Example: 192.168.1.100

    • Gateway → Router IP

    • DNS1 / DNS2 → Use 8.8.8.8 and 8.8.4.4 (Google DNS)

💡 Tip: Only use this if default DHCP doesn’t work reliably.

Troubleshooting / Common Issues

WiFi Keeps Disconnecting

  • Disable Switch to mobile data automatically

  • Reset network settings if needed

Cannot Connect to Network

  • Double-check password

  • Forget and reconnect

  • Try another device to confirm network is working

Slow WiFi

  • Move closer to router

  • Disable WiFi Power Saving Mode

  • Check for apps consuming bandwidth (streaming / cloud sync)

Additional Tips

  • Use 5GHz WiFi if available: Faster and less congested than 2.4GHz

  • Disable VPN temporarily: Some VPNs interfere with WiFi connectivity

  • Turn off Battery Saver: Aggressive battery modes can limit WiFi performance

  • Check for MAC Filtering on Router: Ensure your phone’s MAC address is allowed

Conclusion

WiFi issues on Samsung Galaxy phones with One UI 6 & 7 can arise from software bugs, network settings, or router problems.
By following these 10 step-by-step solutions, you can restore stable connectivity, improve speed, and prevent frequent disconnects.

A combination of network resets, advanced WiFi options, software updates, and Safe Mode troubleshooting ensures a reliable connection on any Samsung Galaxy device.

FAQ

1. Will resetting network settings erase my data?
No, it only resets WiFi, Bluetooth, and mobile data settings. Personal files remain intact.

2. Why is WiFi fast on one device but slow on my Samsung?
Check WiFi frequency, router distance, and apps using bandwidth. Also, disable Power Saving Mode.

3. Can Safe Mode help fix WiFi issues?
Yes, if WiFi works in Safe Mode, a third-party app is likely causing the problem.

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