Remove duplicate Waze contacts on Android
The other day I noticed that my contacts where duplicated by Waze (on Android). This describes how to fix it and easily remove the duplicates.
How to take screenshots in Android 4
Apparently there are different ways of how to take screenshots in Android, this describes some of them. In Android 4.4 on Samsung: Press the Power and Home (hard) button simultaneously and keep them pressed for a moment. On HTC: Press the Volume Down and Power buttons simultaneously and keep them pressed for a moment.
Setting separate notification sounds for email and texts in Android
First, set notification sound in K-9/Gmail (e.g. Gmail; Menu key→Settings→[Select your account]→Sound and Vibration). Thereafter set notification sound in Messages (Messages→Menu key→Settings→Notification signal).