@smyru I tried to connect to a PDF document address and got an "unsupported file format" message. Is that the provider network, the Java language or the Operamini application?

When you say "operator network," do you mean "service provider" like "Airtel Malawi"?

I have Operamini 4.5 installed on a Samsung sm-b312eh. It won't download anything including a new browser or PDF's. I get a popup asking if I want to connect to that site. When I click YES, it clocks a minute and times out. I also get code-signing certificate messages when I try to download a new version from Opera. Can anyone tell me how to manually install a new browser or offer me another solution?