IS it possible to change the band of a phone?

[GutterFaceMobile]

:confused:i have a Samsung Epix (i907). all i need to know is, if it's possible to change the band in this phone, or any phone for that matter? this phone lists tri band (850/1900/2100) and quad band (850/900/1800/1900). i know that this phone as-is, isnt usable on t-mobiles US network, as tmobile's 3G uses 1700mhz uplink and 2100mhz downlink. so its missing the vital 1700mhz feature. so can i download a radio for this phone? or would i have to actually physically change hardware out of the phone? and if i were to physically change hardware out of the phone what would be compatable so that it would be usable on tmobiles 3G network? any info will be greatly appreciated thanks!!:confused:

[orb3000]

:confused:i have a Samsung Epix (i907). all i need to know is, if it's possible to change the band in this phone, or any phone for that matter? this phone lists tri band (850/1900/2100) and quad band (850/900/1800/1900). i know that this phone as-is, isnt usable on t-mobiles US network, as tmobile's 3G uses 1700mhz uplink and 2100mhz downlink. so its missing the vital 1700mhz feature. so can i download a radio for this phone? or would i have to actually physically change hardware out of the phone? and if i were to physically change hardware out of the phone what would be compatable so that it would be usable on tmobiles 3G network? any info will be greatly appreciated thanks!!:confused:

I don´t think this is possible
But hope I´m wrong...