Question: how to change whatsapp background for one contact iphone?
Answer: Press the home button and open WhatsApp., Tap on the back arrow in the top-left corner if you are in a chat., Tap on "Settings"., Tap on "Chats" in the settings menu at the top., Tap on "Chat Wallpaper"., Tap on either "Wallpaper Library" or "Photos" to set wallpaper.