ll series of locked models, after unlocking for the first time, it is completely free to insert the card later.
The free DIY combined design allows maintenance and sales staff to no longer worry abou the inventory backlog caused by the incompatibility of traditional cards, R-SIM16 has the R-SIM Dongle upgrade function for smart cloud.
Can carry multiple sets of unlocking procedures in one, they can all be upgraded to the latest unlocking card application program through the cloud with R-