R-SIM Air support CDMA 4S IOS7.0-7.X , there are two kinds : default version and universal version . T-Mobile from USA carrier and other unlock sim card that can’t  support carrier ,compare with R-SIM5+ ,R-SIM Air have more stable signal ,more speed to have signal,can cooperate with ios7 patch better ,besides have EDIT IMSI that  fit for all the carrier in the world (have 3 kinds models total 55 carriers) !

 

  

 

 R-SIM Air  can support iOS7 CDMA ,USA T-MOBILE and other operators that