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R-SIM 10 iPhone 6,6Plus,5C,5S, 5,4S iOS8.X Unlocking & Activation Works with all SIM cards & Networks 2G/3G/4G GSM/CDMA/WCDMA/LTE.

4G network Signal drop fixed with new Self-Repair Function.No more problem getting back 4G network when you change tower or when you lose network in low Network areas

SPRINT (CDMA) iPhones using 4G SIM cards on 4G Networks bugs fixed with Self-Repair Functions.

Video credits to RSIM RGKNSE YouTube channel