What is Opera Mini?
[I]Opera Mini is a web browser designed primarily for mobile phones, but also for smartphones and personal digital assistants. It uses the Java ME platform and consequently requires that the mobile device be capable of running Java ME applications. Opera Mini is offered free of charge, supported through a partnership between its developer, the Opera Software company, and the search engine company Google.
Opera Mini was derived from the Opera web browser for personal computers, which has been publicly available since 1996. Opera Mini began as a pilot project in 2005. After limited releases in Europe, it was officially launched worldwide on January 24, 2006.