Opera has made the latest version of its mobile browser, Opera Mini 6.5, available for Apple iPhones and iPads, BlackBerry's, Java-enable devices and handsets running Symbian S60.

The mobile browser, which was first unveiled for Google Android devices at the company's Up North Web Conference last month, includes a Data Usage function that can be accessed from the Help Menu. By opening Data Usage, web users can see just how much data they have used in Megabytes (MB) allowing them to work out how much they've spent if they don't have a data allowance included in their mobile deal or if they're abroad and using data roaming which costs extra.

Furthermore, the function also shows how much data has been saved by using Opera Turbo, the browser developers compression technology that that compresses the bandwidth of text and data files on websites by up to 80 percent, which not only ensures the user's cost is reduced but also ensures pages load faster. Opera Turbo can not be switched off in Opera Mini.

"There are a lot of ways to save money on your mobile phone bill and avoid getting hit with nasty overage charges on your cell phone bill and the new data counter in Opera Mini and Opera Mobile is one of those tools," says Phillip Grønvold, product manager for Mobile, Opera Software.

"The data counter instantly shows people how much they have saved, and I guess a really good press release would make that more important, but the PR people told me to stick it all the way down here."

Opera Mini 6.5 also benefits from a Star icon in the URL bar that means the website address can quickly be added to the browser's Bookmarks or Speed Dial with just one-click.

Opera Mini 6.5 can be downloaded now from Opera's dedicated web page.