The Smart phones are becoming more prevalent, but still 80 percent or so of the world use feature phones. The social networking site, Facebook, has introduced a mobile app for those with feature phones. It’s a good move considering all the growth markets—Latin America, Russia, China and India—typically have feature phones.

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“We want people to have a great mobile experience no matter what type of phone they carry. Smart phones have offered better features for sharing with friends but aren’t used by most people around the world,” said Facebook program manager Mark Heynen in a posting on the Facebook’s blog.

The new Facebook for Feature Phones app will help “bring Facebook to the most popular mobile phones around the world,” Heynen said. It “works on more than 2,500 devices from Nokia, Sony Ericsson, LG and other manufacturers,” and will provide a “better Facebook experience for our most popular features, including an easier-to-navigate home screen, contact synchronization, and fast scrolling of photos and friend updates.”

Facebook said:

We also wanted to make it available to as many people as possible. Similar to the 0.facebook.com site, we’ve worked with mobile operators from around the world to let you try this without paying for any data charges. The 14 mobile operators listed below are offering free data access when using the new Facebook mobile app during the first 90 days after they launch.

The mobile operators mentioned by Facebook are providing “free data access when using the new Facebook mobile app during the first 90 days after they launch.” After that, it will cost, depending on the operators’ plans.