The company, encouraged by the sales of Galaxy Note, which has a screen size of 5.5-inch, believes that in the developing countries there is demand for oversized smartphones that can also double up as tablets.
The new Galaxy devices have a screen size of 5.8-inch and 6.3-inch. The smaller of the two Galaxies is availabel for Rs. 25,100, while the 6.3 inch Galaxy is priced at Rs. 31,490.
The Galaxy Mega 5.8 is powered by a dual-core processor running at 1.4GHz and has 1.5GB RAM. The internal storage is limited to 8GB (user accessible storage is just 4.78GB) but there is a microSD card slot through which users can add up to 64GB storage.
The device has a screen with a resolution of 540x960pixel, which is below average considering many smartphones with 5-inch screen nowadays use a 720x1280pixel resolution.
The primary camera can shoot images in up to 8MP while the front camera is limited to 1.9MP. The battery capacity is 2600 mAh.
Galaxy Mega 5.8 weighs 182 grams. It runs the latest version of Android - Jelly Bean 4.2 - that has been modified by Samsung using its Touchwiz user interface.
The Galaxy Mega 6.3 is powered by a dual-core processor running at 1.7GHz. It has a screen with 720p resolution and 16GB internal storage, of which around 10.51GB can be accessed by users.
It has 1.5GB RAM, 8MP primary camera and 1.9MP front camera. The device uses Android 4.2 (Jelly Bean). It weighs 199gram, making it one if the heaviest Android smartphone ever. The battery capacity is rated at 3200mAh.
"Consumers in India are preferring the larger screen displays in their smartphones owing to the time they spend doing more with their devices," said Vineet Taneja, the head of Samsung''s mobile division in India.