Smartphone User Agent differentiations

[Guest yowx]

Hi,

I'm not sure where else to put this actually, but I'm new here and came

across this site. What I'm having trouble with is differentiating between

User Agents of various Smart Phones. I want to be able to have various smart

phones navigate to my site and be able to provide them with personalized

information depending on the phone they have. I have been able to do

"regular" cellphones with simple user agents like Nokia7610, SIE-S65, etc...

But I am having a little trouble with Smart phones and their user agents. For

example, the user agents I was able to find after perusing wurfl and a couple

other sites came up with these results:

Treo 600: Mozilla/4.0 (compatible; MSIE 6.0; Windows 95; PalmSource)

Treo 650: Mozilla/4.0 (compatible; MSIE 6.0; Windows 98;

PalmSource/hspr-H102; Blazer/4.0)

T-Mobile MDA(german): Mozilla/4.0(compatible; MSIE 4.01; Windows CE; PPC;

240x320)

T-Mobile MDA II(german): Mozilla/4.0(compatible; MSIE 4.01; Windows CE; PPC;

240x320)

There is no difference between the MDA and MDA2. And there's only a slight

difference in the end of the user agents between the Treos. I know it's

really because of the OS they're using, but I would still think that there

would be something unique in their user agents that I would be able to parse

out and use to differentiate. For example, Motorola MPX200 and MPX220, were

differentiated by their user agents by listing the exact device being used -

MPX200 and MPX220.

Am I missing something or does anyone have any idea on how I can

differentiate between smart phones so that I can tell what model their using?

Also, does anyone know where else I can find user agents for smart phones

like the ones listed?

O2 XDA III

Toshiba 2032

T-Mobile MDA Compact

T-Mobile MDA II

T-Mobile MDA III

T-Mobile MDA III ohne Kamera

T-Mobile MDA IV

T-Mobile MDA Pro

T-Mobile SDA

T-Mobile SDA II

T-Mobile SDA music

T-Mobile SDA ohne Kamera

VPA III

VPA compact

VPA Digital Assistant