It's quite easy to take a screenshot in the Micromaxx unite 2 A106
You should have to follow the following instruction to take the screenshot:-
1.First step says that you should select a screen whose screenshot you have to take.
2.You should have the knowledge of the buttons of your smartphone.
Recognize the power button and the volume down button.
3.Press the both buttons simultaneously and you will observe that the screen will flicker and capturing sound.
4.If the screen had flickered it means that you have taken the screen otherwise do it again.
5.Go to gallery to see the screenshot you had captured.