***How about two SIM cards/Numbers in one Cell-Phone to take/make calls by simply switching to the number you want to ......easy operation .
 

Hyper Card for GSM - The newest Digital Dual SIM Card
 

Feature :
> Integrate two SIM cards for saving charge of roaming or long-distance call
> Switch SIM cards on line, the easiest way to switch phone numbers.
> Select the number straight on line, do not need to stand-by in turns.
> Advanced Smart-SIM technology leads to stable result.
> Good for all GSM cellular phones.
> Do not need to change the back cover, battery, and others.. Do not need to take 2 or more cell phones with you ...