VoiceSignal's voice recognition software for cellphones

Reader Jonathon Robinson writes in regarding the voice recognition software on LG's VX4500:

The speaker independent voice recognition MobileBurn describes sounds identical to the incredible software on my
Samsung i700 Pocket PC Phone (pictured at right) called VoiceSignal. However, VoiceSignal doesn't list LG in its list
of manufacturers using the software. VoiceSignal works so well its creepy. It has never needed a stitch of training
and responds just as well to names like "Zolnowski" as it does "Smith." What I would like to know is this: how the
heck are they able to acheive this on a handset while Via Voice and the others have been so bad for so many years —
and on a desktop processors, no less?

And a quick check of VoiceSignal's site reveals just over a dozen phones with its software, almost all of them Samsungs. (Thanks to
Rich for also writing in with this.)