Hi Kozak
I think that RiCKManBR is having problems with the 900Mhz and 850Mhz bands...
In Brazil 850Mhz band only operate with CDMA. And 900Mhz is for GSM sevices.
And there are some comunications service providers that not operate with the two technologies...
And maybe the K790i (originally) can be from a client of Mr. RiCKManBR ...
regards