Opera Mini and the Nokia browser are not HTTP web browsers. They are specialized clients talking to specialized transcoders. Opera clearly states this in their

Opera Mini and the Nokia browser are not HTTP web browsers. They are specialized clients talking to specialized transcoders. Opera clearly states this in their FAQ[1]: Is there any end-to-end security between my handset and — for example — paypal.com or my bank? Opera Mini uses a transcoder server to translate HTML/CSS/JavaScript into a more compact format. It will also shrink any images to fit the screen of your handset. This translation step makes Opera Mini fast, small, and also very cheap to use. To be able to do this translation, the Opera Mini server needs to have access to the unencrypted version of the webpage. Therefore no end-to-end encryption between the client and the remote web server is possible. If you need full end-to-end encryption, you should use a full web browser such as Opera Mobile. On the plus side, it may actually add security on public WiFi networks, as the connection to the Opera server is encrypted. [1] http://www.opera.com/mobile/help/faq/#security http://www.opera.com/mobile/help/faq/#security