(Telecompaper) Opera Software announced that Opera Mini will become the default web browser for Microsoft's existing feature phones and Asha phones portfolio. The licensing agreement applies to mobile phones based on the Series 30+, Series 40 and Asha software platforms. As part of the agreement, people who use the current browser for these phones, Xpress, will be encouraged to upgrade to the latest Opera Mini browser. Factory-new devices will have Opera Mini pre-installed.