What is the meaning of R-sim

[madushikasewwandhi]

If r-sim locked can't i use this ?

 

[daffputrw]

R-SIM add the function that can lock carrier, it means it is not only universal unlock card ,but also default unlock card. You can unclock carrier and use another simcard. You can use it, if u running ios 11+ try RSIM 12. Hope it helps