Board Thread:Questions and Answers/@comment-25414512-20141015105254/@comment-11148831-20141017031005

I see. I remember JP version announcing back then that they finally allowed both buttons on an update. I can't remember what version, but it was an update through Google Play/App Store. If there isn't any other method of taking a screenshot, then we'll just have to wait for that update.

Can you try simultaneously pressing down Home button + Power button though?