R-SIM AIR iPhone 4S iOS 7.x.x Unlocking and Activation Plug-and -Play. NO NEED PATCH for SPRINT & all CDMA iPhone 4S. SMS bugs FIXED, EDGE bugs FIXED Supports any baseband CDMA, GSM & WCDMA, 2G,3G,4G 256K/128K/64k/32k/ sim cards and networks. Supports iOS 5/6/7.

All GSM iPhone 4S will have FULL Calls/SMS/3G OK but SPRINT (all CDMA)will have Calls/SMS/EDGE OK with FREE patch when you type www.rsimmart.com/nano4g or www.rsim5.com/nano4g 3G will be fixed with iOS7 next update..