Redmi Note 4, Redmi 4 and Redmi 4A available for pre-orders on the company website, Mi.com. The pre-orders open at 12pm IST, and give customers a guaranteed way to buy the smartphones without queuing up in weekly sales.Xiaomi Redmi Note 4 was launched in January in India in three variants - the 2GB RAM/ 32GB storage variant is priced at Rs. 9,999, the 3GB RAM/ 32GB storage model is priced at Rs. 10,999, and the 4GB RAM/ 64GB storage model is priced at Rs. 12,999. It is available in Gold, Grey, Matte Black, and Silver colour.
Redmi Note 4's rear camera bears a 13-megapixel CMOS sensor equipped with PDAF (phase detection autofocus), an f/2.0 aperture, 77-degree wide angle lens, and dual-tone LED flash. The front camera sports a 5-megapixel CMOS sensor, coupled with an 85-degree wide angle lens. Expandable storage is available on the Redmi Note 4 via a hybrid dual-SIM card configuration.
Xiaomi Redmi 4A (Review) on the other hand was launched in India in March, following its launch in China in November. Featuring a polycarbonate body, the Redmi 4A bears a hybrid dual-SIM card slot, and runs MIUI 8 based on Android 6.0 Marshmallow. The smartphone features a 5-inch HD (720x1280 pixels) display, and is powered by a 1.4GHz quad-core Snapdragon 425 SoC coupled with the Adreno 308 GPU.
A13-megapixel sensor with PDAF, a 5-lens system, an f/2.2 aperture, and is backed by a LED flash. There is a 5-megapixel sensor with an f/2.2 aperture on board as well. The Redmi 4A comes with 16GB of inbuilt storage that is expandable via microSD card.

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