HTC Devices
On HTC devices, you need to press the Home button and the Power button to take screenshots, but instead keep pressing both buttons at the same time, hold down the Power button first, then quickly press the Home button. The screen will flash and you hear a sound. You will also see a message pop -up that screenshot has been saved.
Sony Xperia devices
For Sony Xperia phones. You need to press and hold both the Volume Down button and Power button simultaneously until the screen flashes and the photo thumbnails appear. A message will appear in the notification menu.
In addition, you can also use the Power Menu by pressing and holding the Power button until the Power menu appears. Click on “Take Screenshot “to take screenshots.
LG device
On LG devices, besides pressing the Volume Down button and the Power button like Sony Xperia phones, you can take screenshots by Quick Memo feature. Quick Memo will immediately capture screen images and allows you to draw or sketch on photos.
Nexus devices (Galaxy Nexus, Nexus 4, Nexus 7, and Nexus 10)
Similar to Sony Xperia or LG 's, with Google Nexus’ devices, you still hold the Volume Down button and the Power button until the notification appears. Thumbnail photo will appear on the screen and the user will get the message.
