If you have an existing background on a radio, use the → “Read from radio” → look for “Logo” tab → save to PC.
To ensure your look perfect everywhere, never download a file smaller than 1920x1080. Here is the master resolution guide: anytone background images
Once you download an image, you need to optimize it. A true "anytone" background should work on three specific devices without editing. If you have an existing background on a