Mobile Web developers irate at Vodafone move

Mobile developers around the world are in an uproar over a change Vodafone Group PLC has made in the U.K. that dramatically decreases the quality of their products and that they fear could prevent new and innovative mobile services from reaching the market.

Wireless Ink Corp., a New York-based company operating a service called Winksite that lets anyone develop their own mobile Web page, is one company impacted by the change.

Winksite has a Web site that visitors can access from their PCs to sign up for a service that lets them build mobile Web pages. When users visit the Winksite page from their mobile phones, they see a totally different Web site that lets them view and discover sites developed by other Winksite users, said David Harper, the founder of Winksite.

But since the change at Vodafone, U.K. mobile Winksite users instead see a reformatted version of the PC Web site.

That's because Vodafone recently implemented new technology from Novarra Inc. that is designed to reformat Web sites that were created only for PC users for better display on mobile phones. But mobile service developers say that when Vodafone installed the new technology, it also began stripping out the user agent string when mobile phones access Web sites. The user agent allows a Web site that is designed for mobile phones to detect the type and capabilities of the phone visiting the site, much like the way that Web sites detect which type of browser a visitor has. The user agent string allows a mobile site publisher to deliver a view of the Web site that is optimized for the particular phone.

In addition, companies that sell ring tones or graphics rely on the user agent to determine which content to send to the user that will work on their phone, Harper noted.

Companies that are on Vodafone's "white list," which is a group of Vodafone-approved services, were notified of the change and the operator is passing the user agent correctly for those services, developers say. Some developers complain that it's difficult to find out how to get on the white list, it can take several months to get added and that Vodafone requires white list companies to make certain changes to the way the included sites operate.

If all operators had a similar process, service providers like Harper would have to get on the approved list for every operator around the world. That's comparable to asking any Web service to be approved by every ISP in the world in order to operate.

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