This is where most users fail. Do not use "Save As." Use Export As > BMP . Ensure the dialog box says "24-bit" and "No compression."
Websites like RadioReference.com and HamRadioForum.com have dedicated threads for "AT-D878UV Wallpapers." Users share their own creations, including QSL cards, repeater maps, and emergency service logos. anytone background images
Designers often upload "System UI Wallpaper packs." These are specifically crafted to match the aesthetic of iOS, Android, and Windows. Search for Adaptive wallpapers to find Anytone-style assets. This is where most users fail