R-sim 10 problem

Hi, I bought R-sim 10 and used it for Iphone 5 Softbank Japan. Unfortunately, after installation it showed no service. then i changed mobile set again and tried this Rsim with that sim card, in this time it does not show any installation procedure rather says the sim card is of another carrier… what does it mean ? I am using Rsim to avoid the problem to use different carrier sim. could you provide me suggestion, how can I use your R-sim for Iphone 5 softbank japan?