These type of fonts are popular in embedded devices, like phones. I managed to find guides from Symbian and MSDN documentation sites, but what I want is to open an .ltt file that I downloaded (the original typeface of my SE W508). This is possible? A software to do this exists?
Quickly looking around, I found this which is probably the same LTT font format you are asking about. ( https://developer.brewmp.com/resources/tech-guides/fonts-features-technology-guide/creating-and-using-fonts-brew-mp-applications/creating-custom-linkedtruety ) which claims:
And at that location I see this:
Which implies that the font files are not part of the LTT file format (i.e. the file is like a packing list, instructing applications which parts of what fonts to use when). The font files may be elsewhere on the device, possibly in the same folder as the LTT file (or in an archive/container format).