I'm moving to Japan and have a perfectly useable QWERTY 9700 (o2 supplied). Does anyone have experience of a non-Japan-provider-supplied handset being used in Japan:
a) is it easy (a straight SIM swap)?
b) are there any extra costs involved?
c) is software upgrade needed (I want and need Japanese language input, which, though supported by Vodafone in UK, didn't seem available on o2/Telefonica)?
d) anything else that's good to know?