Samsung
Set Up a Proxy Server for Wi-Fi auf Samsung
A proxy sits between your Samsung phone and the internet. Some offices, schools and public networks require every device to route Wi-Fi traffic through a designated proxy server before it reaches the web.
If that proxy is not entered on your phone, connected apps and browsers will show a generic connection error even though Wi-Fi shows as connected. This setting only applies to the Wi-Fi network you edit it on, so it has no effect on mobile data or other saved networks.
Where to enter the proxy
Go to Tap on Settings ➔ Tap on Connections ➔ Tap on Wi-Fi ➔ Tap on Settings ➔ Tap on Advanced ➔ Tap on Proxy.
Here you choose between Manualor Auto-config. Manual mode asks for the proxy host name and proxy port directly, plus optional username and password if the network requires authentication. Auto-config instead expects a PAC URL that your network administrator provides, and the phone downloads the proxy rules from that address automatically.
After picking a mode, use Enter the Corresponding dataand tap Save to apply the settings immediately.
When something still fails
A wrong port number or an expired PAC URL is the most common reason the connection keeps failing after setup. If the network switched to a different proxy server recently, ask your network administrator for the current host, port and any authentication details before trying again.