I've invented something and it's an odd fit-2

(part one)
To put it bluntly, I think it's a straightforward matter that the odds favor doing nothing unless a value-added reseller (VAR; includes PCS companies like Verizon, Singtel or Cingular) demands the product. I think the ideal strategy is to find other inventors in the same field, and present these together as part of a product.

In this case, I think you may need to think about the selling of the invention as part of the invention itself.

This means you have to think about how the invention would be implemented. In the case of Singtel:

Singtel is a service provider. Their job is to provide services to users of cellphones. They buy phones from another company, custom-made, perhaps add microcode, and resell them to users bundled with the PCS. This means they are likely to represent the demand for a new user interface. What I am saying is, your customer is most likely going to be a VAR.

Now, where are these VARs going to be located? If the USA, the language is English and I would argue that your ideal user is not Kristie Midriff, but industrial firms that provide handhelds: Psion Teklogix. The reason is that these are already firms that provide custom devices with specialized interfaces, and they may well need something with a small, compact that they can adapt. This requires you learn about industrial handhelds.

You then take this knowledge and use it to refine your product.

Also, you need to do a lot of research. There are networks like Skype, and I've blogged about them. You need to use them to get in touch with other inventors who are in the same field and have complementary technologies, because that is how you are going to make your patent attractive to others: by finding complementary ones, contacting the developers, and forming alliances. This will require diplacy and knowledge. Do you feel that you are up to this? This is what inventing is all about.