Fonts size, not possible change (or need more work for UI and text position and sizes)
Remember state (select and save config) allow save several state (like freq range, bandwidth, points count, options) while device power off (but battery present).
SD card better format in FAT32, for LiteVNA and Card reader mode better set bigger sector size (32-64k) this allow more faster read file structure from card and see card data. H4 and Lite also support ExFAT filesystem.
