I just had to do this.The manufacturer gave me these instructions:
A) HAVE OLD PHONE PUT TOGETHER REGULARLY AND GO TO THE PHONE BOOK OPTION (****MUST BE PHONEBOOK OPTION FROM MENU, IF YOU JUST SCROLL DOWN TO GET TO THE PHONE BOOK, IT WONT WORK)
B) while in "phone book" select the "manage sim" option
C) while in "manage sim" select the "copy TO sim" option
*******WAIT FOR NUMBERS TO COPY, TAKES A MINUTE***
D) TURN OFF THE PHONE BEFORE REMOVING BATTERY AND SIM CARD
E) PLUG IN SIM CARD TO NEW PHONE.......
F) FOLLOW STEPS A & B AGAIN.......
G) THIS TIME SELECT THE "COPY "FROM" SIM" OPTION
ALL DONE, ENJOY! MAN I HAD TO HUNT THIS INFO DOWN, GLAD I COULD HELP........