The Wave series models backed by Samsung's proprietary system "bada" reflects the South Korean firm's shift in strategy from as being a pure hardware manufacturer to become more software-focused.
It is also aimed from pulling together Samsung's different products of smartphones, televisions, printers and computers under its software platform and online application store Samsung Apps.
Samsung on Tuesday unveiled Wave 3 having a 4-inch AMOLED screen and a 5 megapixel camera, as well as less expensive Wave M and Wave Y. The Wave M will have Samsung's very first instant messaging tool chatON installed and entry-level Wave Y with 3. 2-inch display goes on sale in October.
The three models add to 7 Wave series lineups Samsung introduced since first bada-based product continued sale in May 2010.
Samsung, whose flagship Android-based Galaxy S models helped it get to be the world's second-largest smartphone maker in the second quarter, is now focusing upon emerging markets with cheaper phones costing $200 or below.
Last week Samsung unveiled four new mid-to-low end models running on Android to protect its market share, as Apple, which has long stuck to the more advanced of a booming mobile device arena, is set to launch a lower-cost version from the iPhone 4 soon.
The Wave series will allow access to Samsung Applications, which has around 13, 000 applications.
The number is dwarfed by a lot more than 100, 000 applications available in Android market and over 300, 000 applications from Apple's App Store.