850 band SIM converter for XDA II

[JorgeGZC]

Hey guys ,we all know that the XDA II and the XDA IIi have only a Tri-band (GSM 900/1800/1900) but do you thing that we can use an sim converter to add the 850 band, so the phone will be avaliable worldwide?
regards
Jorge
:P

[Rudegar]

i doubt it it's nothing to do with the sim really it's the gsm radio hardware i think which is hardware limited to some frequencys
if they made it custonising then one may be able to change it messing with
pot's and such
otherwise it would require new crystals inside the gsm module