The Sim BOX or Sim array is a hardware solution for external storage of SIM cards. Each Sim card can be.
Sim box fraud means most of the time bypass fraud or call reseling. Let me explain simplified first the basics of a GSM network and the billing process. I will cut.
International call bypass is one of telecom's toughest fraud problems. The fraud is primarily accomplished through SIM boxes equipped with dozens to hundreds. SIM box for 300 SIM cards unpacking