Operamini, the great mobile browser, is an invaluable tool to any mobile internet user. It supports many languages, including bengali. But enabling bengali/any other complex script language support in operamini takes some effort. To enable complex script rendering in mini opera, go to

opera:config

yeah, enter the above address in operamini address bar without anything else like www etc. U will be taken to advanced configuration page of operamini. Enable ' render complex script fonts in server' in the page and click 'save' . You will be now able to see complex text scripts in opera mini even if your phone doesn't have those complex script language fonts