You can change your chat wallpaper in Signal by going to Settings > Appearance > Chat wallpaper.
There are a total of 21 chat wallpapers to choose from, including 12 solid colors and 9 gradient colors.Android Police said you can also choose a photo from your phone’s camera roll for extra personalization.
Users will have the opportunity to choose an emoji and also add a short description of themselves.
If you’re on iOS, Signal said it also plans to add media auto-download settings and full-screen profile photos, the latter of which is already available on Android.XDA » News Brief » Signal adds custom wallpapers and animated stickers to catch up to WhatsApp.