Quick answer: If your VPN won't connect on the Samsung Galaxy S24, it is almost always caused by One UI 6.1's aggressive battery optimization. Samsung's new Android 14 software actively "kills" background apps to save battery life, which instantly severs your VPN tunnel the moment the screen turns off or the app goes to the background. The fix is to manually set your VPN app to "Unrestricted" battery usage.
If you have a brand new Galaxy S24, S24+, or S24 Ultra and your VPN keeps dropping or refusing to connect, this guide walks through the exact settings Samsung changed in One UI 6.1 and how to bypass them.
Fix 1: Disable Battery Optimization for the VPN (The #1 Fix)
Samsung's One UI puts apps to sleep if it thinks they are draining battery. A VPN requires a constant background connection, so we need to tell the phone to leave it alone.
- Open your phone's Settings app.
- Scroll down and tap Apps.
- Find your VPN app in the list and tap it.
- Tap Battery.
- Change the setting from "Optimized" to Unrestricted.
- Force close the VPN app and reopen it.
This single setting change resolves the "connection dropped" error for the many users, depending on the VPN app and device settings.
Fix 2: Toggle "Always-on VPN" in Network Settings
Sometimes the Android 14 network stack gets confused about which app has permission to hold the network tunnel. Forcing Android to re-register the VPN fixes this handshake issue.
- Go to Settings > Connections (or Network & internet).
- Tap More connection settings.
- Tap VPN.
- Tap the gear icon next to your active VPN.
- Toggle Always-on VPN OFF, wait 5 seconds, and toggle it back ON.
Fix 3: Switch Your VPN Protocol to WireGuard
The older OpenVPN protocol relies on background services that Samsung's new memory management frequently kills. Modern protocols like WireGuard are much lighter on system resources and are fully supported by Android 14.
Open your VPN app's settings, find the Protocol menu, and switch to WireGuard (sometimes called NordLynx or WireGuard). This dramatically reduces the chance of the S24's operating system killing the connection in the background.
If your current VPN app hasn't been updated to support Android 14's new background restrictions, you may experience constant drops. Modern providers like NordVPN and Surfshark regularly patch their Android apps specifically to bypass Samsung's aggressive One UI battery restrictions, ensuring stable connections on the S24 series.
Fix 4: Reset Network Settings (The Nuclear Option)
If the S24's internal network cache is corrupted, no VPN will connect until you clear it. This will not delete your personal data, but it will forget your saved Wi-Fi passwords and Bluetooth pairings.
- Go to Settings > General management.
- Tap Reset.
- Tap Reset network settings.
- Confirm the reset and restart your phone.
FAQ
Does the Galaxy S24 block VPNs?
No. Samsung does not block VPNs. The issue is entirely related to how the One UI 6.1 software manages background battery life and memory allocation. Adjusting the battery settings fixes the problem.
Will my VPN drain my S24 battery faster?
Modern VPN protocols like WireGuard use less than 1% of your battery per hour. If your battery is draining rapidly, it is likely the phone constantly trying to reconnect a dropped tunnel. Setting the battery to "Unrestricted" stops the reconnection loop and saves battery.
Final Verdict
VPN issues on the Galaxy S24 are rarely a problem with the VPN itself, but rather a conflict with Samsung's One UI 6.1 battery optimization. Setting your VPN app to "Unrestricted" battery usage and switching to the WireGuard protocol will result in a stable, always-on connection.
This guide is based on Samsung Galaxy S24 One UI 6.1 documentation and Android 14 network troubleshooting protocols.