If you rely on WhatsApp for messaging, you're probably too familiar with the default background of chats. The distinctive look definitely sets it apart from other messaging apps. You can, however, exchange it for something more appealing.
Open WhatsApp and go to app settings. If you're using Android, click the three-dot menu icon and choose Settings. If you're using an iPhone, just tap the Settings icon on the main screen. In either case, select "Chats" and then press either "Wallpaper" (Android) or "Chat Wallpaper (iPhone)."
From there, you can choose between different images and fixed background colors the gallery of your phone If you work with Android, you can also install the WhatsApp Wallpaper app to get even more options, regardless of which image you select, the old default background will be permanently removed!