When the iPhone originally released in 2007, the Safari browser was a exposure in web browsing on a smartphone. these days, competing browsers also based off of the Web kit source from Google's Android and Palm's Web OS have delayed.
iPhone Safari is still a lots of usable, in particular for those on Wi-Fi or a strong 3G connection, but Opera can do better through its Opera Mini browser and some clever server-side compression tricks.

Opera says that due to server-side interpretation, Opera Mini compresses data by up to 90 % before sending it to the phone, resulting in rapid page loading with less data transferred. This could be extremely helpful for those on capped data plans, especially when roaming.

Opera declared that its Mini browser for iPhone was officially submitted to the Apple iPhone App store today. Of course, given Apple's tight control over what can and cannot be on the iPhone, it's anybody's guess as to whether or not Opera Mini will be approved.
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