For some older or specific versions of Opera for Android, you can try accessing internal settings: Type opera:config in the address bar. Search for the section.
Tap . When you open Opera, it may prompt you for a username and password if your proxy requires authentication. Method 2: Configuration via Mobile Data (APN) opera mobile proxy android
Most users are looking for the native proxy/VPN functionality built directly into the Opera Browser for Android. Opera markets this as a free, built-in VPN, but technically, it functions as a secure proxy service for the browser traffic only. For some older or specific versions of Opera