Introduction:
B1637B SIM card Extender is a debug and test tool. Design the FPC cable for flexible use.
It allows a SIM Card to be extended from the host slot for SIM interface.
It’s especially designed to save valuable labor and time in the production environment. The SIM extender is designed to minimize the signal degradation effects of the extender by proven design techniques. 

It’s also a powerful tool for engineers, or use for mobile phone SIM test protection.