DataWind has announced new additions to its PocketSurfer range which includes what it calls the world's cheapest smartphone with a 5-inch screen.

The Rs 3,499 DataWind PocketSurfer 5X has a 5-inch WQVGA (480x240 pixels) screen and runs on Linux OS.

The dual-SIM PocketSurfer 5X has a Cortex A8 - 1Ghz CPU and a front VGA camera.

With a Rs 4,999 price tag, the PocketSurfer 5 includes a higher resolution 5-inch WVGA (800x480 pixels) screen and operates on Android 4.0.

The dual-SIM DataWind PocketSurfer 5 is powered by a Cortex A9 1 Ghz processor. Phone 5 has a front VGA and a rear 2 megapixel camera.

At Rs 6499 the DataWind PocketSurfer 3G5 is the most-expensive phone in the PocketSurfer series. This 3G phone runs on Android 4.0 and has a 5-inch WVGA (800x480 pixels) screen.

The PocketSurfer 3G5 has a VGA front camera and a 5 megapixel rear camera. The dual-SIM phone is powered by dual-core Cortex A7 1.2 Ghz CPU.

All the three phones come with a microSD slot, but the specifications released by DataWind do not mention anything about internal storage or RAM.