The Nokia Lumia 625 is currently the largest screened Windows Phone. At 4.7-inches though, it may be a few notches smaller than Android phones in its price range. Internally, it is not too different from the physically smaller Lumia 720. It has the same 800 x 480 pixel resolution, 512MB RAM and 8GB of internal memory, alongside the microSD card slot. The processor is a slightly faster 1.2GHz dual-core Snapdragon, while the camera is downgraded a little to a typical 5 megapixel sensor. But presumably thanks to the faster chipset, the Lumia 625 can record videos in Full HD 1080p resolution. There's a front-facing VGA camera for video-calling. Another star feature of this phone is the support for 4G LTE. The Lumia 625 runs the latest Windows Phone 8 smartphone OS and has the same 2000 mAh battery as the Lumia 720.
The Galaxy Grand Quattro (also known as the Galaxy Win in countries outside India) is Samsung's cheapest quad-core smartphone to cost under Rs. 20,000 today. It is designed pretty much like every other Samsung Galaxy smartphone today — in fact it is becoming increasingly hard to differentiate between them. It is similar to the Galaxy Grand, but the Quattro has a slightly smaller 4.7-inch screen bearing the same 800 x 480 pixel resolution, This results in a slightly sharper clarity. It is powered by a Qualcomm quad-core 1.2GHz processor and a gigabyte of RAM, but the CPU is based on the older ARM Cortex A5 architecture (whereas the Grand is based on the newer Cortex A9). There's a 5 megapixel camera at the back with an LED flash and a speaker grille placed on either side of the sensor. This is slightly lower than the 8 megapixel unit on the Galaxy Grand.
The Grand Quattro can record videos in a non HD resolution of 720 x 480 pixels (FYI that's DVD resolution). This is disappointing because the Galaxy Grand can shoot videos in 1080p Full HD. The front facing camera has been downgraded from 2 megapixel to 0.3 megapixels.
In terms of software, it runs Android 4.1 Jelly Bean atop Samsung's TouchWIZ interface. It retains some of the features from Samsung's stable like Smart stay, that automatically dims the display when you look away from it.