Old android - the new launched xiaomi redmi note 4 is still stuck MIUI interface .which is based on an overall one year old marshmalow 6.0 os. Xiaomi looks very much similar to many more chinese smartphones which are available in the market. And there is no key or special feature in this phone. Though xiaomi claims that redmi note 4 has an impressive camera, on the paper the device has lesser camera megapixels than its predecessor. The redmi note 3 has 16MP rear camera while redmi note 4 has 13 MP shooter. Almost the same battery life on the battery info too there is a little upgrade xiaomi redmi note 4 comes with a 4100mah battery capacity.