HELP requested with using a 900/1900 in a 900/1800 country

[tpullen]

hello:

i know that this topic has been addressed, but it's not clear what the answer is:

i have a friend that bought the "b" model xda (900/1900) in the united states, and took it to brasil. he ran XDAunlock, and the sim is unlocked.
with bootloader, he told the phone to operate at 900/1800. the program
"bandswitcher" or something that's included in the xda developer's rom
indicates that the phone is at 900/1800.

but it gets no signal using sim cards in sao paolo, brasil.

many posters have indicated that they do get some connectivity,
not quite what a native 900/1800 would get, but much better than nothing.
other posters have said that it is not possible to get any signal, since there is a hardware difference that can't be compensated for with software.

who is right? is there anyone from brazil that has gotten a 900/1900 phone to work that could tell me how they did it, what city they're in, and what provider they use?

if it's true there is a hardware difference, is there a user-friendly way to swap out some internal part to make the bandwidth change?

any firm answers appreciated; if you are only guessing (like assuming that since wallaby bootloader mentions switching bandwidth, it's therefore possible), then please say so. i'd really like to know for sure what the story is.

thanks guys!

[cruisin-thru]

The 900/1900 gsm phone was never intended to work at 1800, some people manage to get signal but there are many factors involved such as proximity to mast, the fact is you are trying to use it off tune, try listening to a radio station 100mhz away from the advertised frequency and see how it sounds, if you were right next to the transmitter you would probably hear it because it would break through on to adjacent bands, but go further away and the discrepancy would become more obvious. If you need to work on 1800 get another phone or sell it and get the correct model.

[Biso007]

hi,

let ur friend ask the operator there if they have 900 MHz signal. if yes, then all he has to do is to select this band on both GSM menu at the bootloader and in the phone settings.

good luck