(3)
On some phones the ''Take a screenshot'' option is available from the Power off menu. Press and hold the power button for 1-2 seconds until the power options screen appears. If the option is available select ''Take a Screenshot''. Don''t worry, it will take a screenshot of whatever is behind this menu.
Note:-
This method is working on many Latest Launched android mobiles. ex. Spice Mi-535 Stellar Pinnacel PRO.
Method 4
(4)
If above methods are not works for you then use this methods. Press and hold your android phone's home Button and Back Button at the same time for 1-2 seconds.
Note:-
This method is working on many China Made Android Mobile