But then, with the wide variety of smartphones available in the market it is never easy to decide which one to pick. It is always tough deciding the one that may suit our needs best.

Here's a list of things you should consider before you decide to buy your next smartphone.

1)Build quality :Build is all about durability of a smartphone. The entire handset market is largely divided in two types of builds -- metal and plastic.

There are some that even have glass-coated panels, but those are very limited.

​2)Display :The size and resolution of display depends on how you use your smartphone. If you often stream videos, edit photos or videos, or download and view movies, then a smartphone display ranging from 5.5-inch to 6-inch, full-HD or QHD resolution should be good enough for you.

​3)processor:The processing power of a smartphone varies from one device to another depending on several factors such as OS version, UI, bloatware and more.

4)​camera:Just having higher number of megapixels does not mean that the smartphone camera is better. Several specifications such as camera aperture, ISO levels, pixel size, autofocus and more are essential as well. A 16MP rear camera does not necessarily be better than a 12MP camera. Same theory goes for the front-facing camera.

5)​battery life:The battery usage differs from user to user depending on the way he/she uses the smartphone. If you are a heavy user and work on apps, play games, stream videos and more then go for a smartphone with at least 3500mAh battery or above.

Why do planes have blue seats?

The answer to this question has always been a secret but from now, it will no longer be a secret to both of us. Those who have traveled by planes severally must have noticed that the seats and sometimes the interior of planes are blue. Why blue? The answer in layman's language is because the color blue is believed to evoke a feeling of calmness, making traveling less stressful.

Are planes affected by lightning strikes?

This is another question whose answer has remained to be a secret. But the truth is that planes are not affected by lightning. Planes are fitted with a metal gauze that goes through the skin of the plane. This metal is designed to conduct electricity but again prevent it from reaching the interior of the plane at the same time.

How human waste is disposed of.

This has also remained to be a secret to almost all of us (but not you anyway). People believe that the waste is dumped while planes are on the flight. However, there is little evidence to support that. The truth is, all waste is stored in a large tank at the back of the plane. This waste would be cleared from the tank once the plane has landed.