... ; 2,switch independence, support for the size of SIM card; 3,ports support hot-swapping; 4,a ... equipments work at the same time can insert 16 SIM cards(big or small) Connected through the one data ... wireless modules,can be inserted 16 SIM cards,you can also use the 16 cards to send text messages, send ... ; 2,switch independence, support for the size of SIM card; 3,ports support hot-swapping; 4,a ...