16-07-2020 05:45 PM - last edited 16-07-2020 06:41 PM
A50 has just updated and there is now the option for custom wallpaper for message contacts.
You can choose a picture or colour.
16-07-2020 11:58 PM
17-07-2020 01:02 AM
Make sure you are using Samsung Messages.
You can set a wallpaper for each contact.
Open the contact in messages,
3 dot menu (top right)
customise wallpaper
choose picture from gallery.