Summary:
The number went up to 16, then 32 and now SIM boxes can hold and operate up to 64 SIM cards. Soon, SIM boxes which could operate eight SIM cards at a time were developed. Tracking calls made through SIM boxes is difficult as calls are routed through a random SIM card every time. No international tariff“Each SIM box can hold up to 32 SIM cards which route international calls. Hundreds of SIM cards are used and discarded by terrorists on a daily basis, thanks to the availability of SIM cards without enough verification.”Sources said that the SIM box technology that is seen today is a much advanced version of similar technology which was developed around 10 years ago..