Both devices wear the codename taoshan
There are only network related changes, however both Sony FTF's & custom roms can be cross flashed. (Just be sure to exclude baseband.sin when cross flashing an FTF file.)
C2105 3G 900 / 2100
C2104 850 / 1700 / 1900 / 2100
Last edited by Joery360; 13th April 2014 at 07:13 PM.