It will be able to read SIM CARDS and extract SIM-card-related information along with all user information on the SIM card, like phone call register and text messages, even if they have been deleted.

This paper introduces the technology of RF-SIM card, and based on current VIP system, advances the design scheme of VIP system based on RF-SIM card, and gives the general design mode.

You can use the "cloned" sim and the original sim simultaneously meaning both of your SIMs will have network and both can send SMS at the same time.