OpsN,
Here it is -
i-mate = Brand Name
JASJAM = Model (no idea WTF JASJAM means though!!)
It's a smartphone. i.e. combination mobile phone and small PC running Microsoft Pocket Windows Operating system
NEXTG = next generation digital mobile network, according to Telstra, offering
the combined benefits of Digital and CDMA.
I'm no communications engineer, but I reckon that's pretty clear.
Cheers
BTW, look here -
http://www.clubimate.com/