Beautiful HD BackGround Wallpapers for WhatsApp WhatsApp is one of today's most popular cross-platform messaging service. If you are bored to use default WhatsApp background chat wallpaper then you have to change it anytime. How to Change Your Chat Wallpaper on WhatsApp To change the wallpaper of the WhatsApp chat screen, follow the below procedure: Open WhatsApp Messenger and tap on the Menu key. Go to Settings > Chats and Calls. Tap on Wallpaper. Tap on Android System > BackGround Wallpapers WhatsApp. Tap the image you'd like to select as your new wallpaper.