no
your gf can use calling card in sg to call u in china
u buy 1 in china and call your gf in s'pore
oh i see what u mean
u can't read those in china 
tsk, same method mah, try all the numbers on the card one of
them sure work lah hahaha
My peeve is not the talktime spent, that took up the smallest
fraction, if me knew each sms was so exp, I cut down
already.
Can just limit to 5sms a day.