Step 1: Upgrade to the latest IOS 13.3.1 Step 2: Plug R-SIM unlcok chips, Pop-up Windows Step 3: Select [Iccid Activation] select the [ICCID UNLOCK] [Edit ICCID code] and enter ICCID Code send, and then click Accept. Step 4: Turn off the phone and connect to WiFi to activate the phone perfectly.