More than 1 million downloads for the first day on App Store. Opera provides a brand-new look and feel in a class of its own with smooth animations and visually appealing graphics. The Opera rendering engine displays complete Web pages, just like on your computer, and is fully standards-compliant. Switching between open Web pages is a snap with tabs, and Speed Dial launches your favorite Web sites with a single click. Opera’s well-designed user interface has you navigating gracefully and efficiently on both touchscreen and keypad devices. The browser comfortably adjusts to your needs by switching between portrait and landscape mode and also lets you adjust the font size for easier reading.
Here is the confront with iPhone Safari:
What is your current browser on mobile phone?
And here are some screenshots from an iPhone with Opera Mini:
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