I bought my Oppo F1s a year ago. It is one of the best mobile i’ve ever used. With 3 GB Ram, Octacore processor and 32 GB internal storage it is the best thing you’ll get in market for such a low price and high reliability. Its in call sound quality is good and loud. It has a very user friendly interface with an android 5.1 Lollipop operating system. It is a very sleek phone. With a golden back cover and curved edges it looks very stylish. Other than these it has a 16 MP front camera due to which it is also called selfie expert. Other than that it has a number of other camera features such as time lapse, overlapping, and camera. It also has fingerprint scanner which ensures higher security levels than other phones. After one year of usage I can say that it is very reliable as it does not hangs even when I play games of very high quality. Its battery backup is also quiet high as it is equipped with a 4400 mah battery. It is a very light phone and very easy to carry. For 18, 000 Rs. it is the best phone you’ll get in android category.