Femme tenant un smartphone Samsung affichant une erreur de connexion WiFi sans internet dans une cuisine moderne

What to do in case of no internet connection on Samsung Android: key solutions

ParDamien Julien

On a Samsung smartphone running Android, the message “connected, no Internet” indicates that the device has successfully established a connection with the Wi-Fi network, but no data traffic is passing through. The issue lies between the router and the DNS server, or between a software layer of the phone and the network gateway. Identifying the problematic layer allows for a fix in just a few minutes.

Private DNS on Samsung Android: an unknown cause of Wi-Fi without Internet

The Galaxy devices running Android 13, Android 14, and One UI offer a setting called Private DNS, accessible in Settings > Connections > Other connection settings. This field accepts a third-party hostname (AdGuard, NextDNS, or any custom resolver).

When the remote DNS service goes down or is blocked by the operator’s box or a corporate network firewall, the phone maintains its Wi-Fi connection but no addresses can be resolved. The result: all applications display a network error while the Wi-Fi icon remains lit.

To quickly diagnose this case, simply switch the private DNS back to “Automatic” or “Disabled” in the settings, then test browsing. If the no internet connection on Samsung disappears after this action, the configured DNS hostname was indeed the cause.

Man working from home resolving a no internet connection issue on a Samsung Android smartphone next to a laptop

VPN and kill switch: when the tunnel cuts off network access on Android

Public VPN applications (NordVPN, ExpressVPN, Surfshark, among others) now include a kill switch feature. This mechanism blocks all Internet traffic as soon as the encrypted tunnel disconnects, to prevent data leaks in clear text.

The Wi-Fi still shows as connected, the signal is stable, but no requests go through. On a Samsung Galaxy, the problem often occurs after a change of Wi-Fi network or after prolonged sleep: the VPN loses its session, the kill switch activates, and the user sees “connected, no Internet” without understanding why.

Quick check of the active VPN

Open Settings > Connections > More connection settings > VPN. If a VPN profile is listed as “connected” or “pending,” temporarily disabling it can confirm that it is responsible for the blockage.

Another clue: a small key icon appears in the status bar when a VPN is active. If this icon is visible at the time of the issue, disabling the VPN usually restores browsing.

Adaptive Wi-Fi and automatic switch to mobile data

Recent Galaxy models come with options grouped under the name Intelligent Wi-Fi or Adaptive Wi-Fi. Among them, the automatic switch to mobile data (“Switch to mobile data”) detects a Wi-Fi connection deemed slow or unstable and redirects traffic to 4G or 5G.

This behavior creates two problematic situations:

  • The phone switches to mobile data while Wi-Fi is functioning, consuming the plan without clearly notifying the user.
  • The switch fails (plan exhausted, weak mobile network), and the device ends up with no active connection despite being technically connected to Wi-Fi.
  • Repeated switches between Wi-Fi and mobile data cause micro-disconnections that interrupt downloads or VoIP calls.

To stabilize the connection, disable this option in Settings > Connections > Wi-Fi > three-dot menu > Intelligent Wi-Fi. This forces the phone to stay on Wi-Fi even if the speed is low, making diagnosis easier.

Teen holding a Samsung smartphone near a Wi-Fi router to resolve an internet connection issue on Android

Resetting network settings on Samsung: the targeted procedure

When private DNS, VPN, and intelligent Wi-Fi options have been ruled out, resetting network settings clears all stored configurations without affecting personal files.

What the network reset removes

  • All saved Wi-Fi networks and their passwords.
  • Saved Bluetooth pairings.
  • APN configurations for mobile data (automatically recreated upon restart in most cases).
  • VPN profiles and custom private DNS settings.

The procedure is found in Settings > General management > Reset > Reset network settings. After confirmation, the phone restarts with default network settings.

Reconnect Wi-Fi after the reset

Select the Wi-Fi network, enter the password, and then check that the private DNS remains on “Automatic.” If the connection works at this stage, the issue was due to a corrupted network setting or a conflict between configurations piled up over One UI updates.

A router restart in parallel is also helpful in this procedure. Some DHCP lease issues (the IP address assigned to the phone by the box) are only resolved when both sides, device and router, start from a clean session.

The message “connected, no Internet” on a Samsung Galaxy almost always hides a specific software conflict rather than a hardware failure. Checking the private DNS, disabling a potential VPN with a kill switch, neutralizing the automatic Wi-Fi/mobile data switch, and then resetting network settings covers the vast majority of cases. Keeping the private DNS setting on “Automatic” after correction prevents the most frequent recurrence.

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