Taking screenshot is like ABC on Android device nowadays. Same apply to Xiaomi Redmi 1S. It supports the Google Android method ~ Volume Down + Power Buttons. And it has own way too. Basically, all the smartphones that use MIUI ROM support that method. You should know it after went through the pre-installed user guide.
How to take screenshot on Redmi 1S?
Just press Menu + Volume Down buttons will do. As simple as ABC, right?