20th edition is out and they claim
EW FUNCTION:
1)Two number in one card
2)Two number auto switch on line.
The auto switch time of two numbers can be set separately ,
SIM 1 from 1 minute to 999 minutes, SIM 2 from 1 minute to 999 minutes .
3) Initiate show number on screen function.
4) Language select
(English/Chinese/Pyccknn/French/Spanish/Arabic)
5) Freely switch number on line Without power on/off
6) The record of calling memory function.
7) Supports 2G and 3G card
8) The most highly applicability of the mobile
9) Use the Import America IC.
10) Quality control by Japan standard.

The question I have is has anyone tried this in a Curve, what I mean will it fit in the curve's sim tray??