Fix: Android Won't Connect to Saved Wi-Fi Network

What Does the "Can't Connect to Network" Error Mean

Your Android device displays a message indicating it cannot connect to a saved Wi-Fi access point. The smartphone detects the network and attempts authentication, but the process either gets stuck in a loop or fails with the ERR_WIFI_CONN error. This issue typically occurs immediately after changing the router password, updating the phone's firmware, or an unexpected router power loss. The system is using outdated credentials or corrupted routing parameters, which prevents data packet exchange from starting.

Causes

• Changed router credentials. The password or encryption type (e.g., switching from WPA2 to WPA3) has been updated on the router side, but the phone continues to use the outdated connection profile.
• DHCP address conflict. The router's server assigned an IP address to your device that is already in use by another gadget on the local network.
• Corrupted network service cache. Temporary files responsible for managing the wireless adapter have accumulated errors following an improper shutdown.
• Regional channel incompatibility. The router has switched to channels 12 or 13, which are not hardware-supported in certain Android versions for your region.
• Wi-Fi module failure after an OS update. A system package update may have incorrectly applied new network stack drivers.

Solutions

Method 1: Forget the Saved Network and Reconnect

This is the quickest method, as it clears the local connection profile and forces the system to request the credentials again.

1. Open Settings → Network & internet → Wi-Fi.
2. Locate the problematic network in the saved list and tap the gear icon or information icon next to it.
3. Select Forget network or Delete.
4. Return to the list of available networks, tap the desired access point, and manually enter the current password.

💡 Tip: When entering the password, enable the "Show characters" option to avoid accidental spaces or case errors.

Method 2: Check Router Settings

If the error persists across all devices, the issue lies on the router side.

1. Access the router's web interface via a browser (typically 192.168.0.1 or 192.168.1.1).
2. Navigate to the Wireless → Security section.
3. Ensure that WPA2-PSK (AES) is selected as the encryption type. TKIP mode or the legacy WEP standard are blocked by modern Android versions.
4. Save the changes and reboot the router through the administration menu.

Method 3: Assign a Static IP Address

This method bypasses DHCP server failures and resolves IP assignment looping issues.

1. Open Wi-Fi settings and tap the gear icon next to your network.
2. Expand Advanced or Advanced settings.
3. Under IP settings, select Static.
4. Fill in the fields with the following values:
   • IP address: 192.168.1.50 (the last digit can be any number from 10 to 254)
   • Gateway: 192.168.1.1 (matches the router's address)
   • Network prefix length: 24
   • DNS 1: 8.8.8.8
   • DNS 2: 1.1.1.1
5. Tap Save and verify the connection.

⚠️ Important: If your router uses the 192.168.0.x subnet, change the third octet in the IP and gateway addresses to 0.

Method 4: Full Network Settings Reset

A more drastic but highly effective method that completely rebuilds the system's adapter configurations.

1. Go to Settings → System → Reset options.
2. Select Reset Wi-Fi, mobile & Bluetooth.
3. Confirm the action by entering your PIN or pattern.
4. After the automatic reboot, reconnect to Wi-Fi by entering the password.

⚠️ Important: You will lose all saved access points and paired Bluetooth devices. Photos, contacts, and apps will remain unaffected.

Prevention

To prevent the error from recurring, update your router's firmware at least once every six months. Avoid using the Auto (WPA2/WPA3) encryption setting if you have devices older than 2018—force WPA2-Personal instead. Reboot your router once a month to clear the ARP table, and avoid changing the network name (SSID) unless necessary, as Android ties the security profile to this identifier.