1. When the black card is inserted in the power on state, the device will prompt that it needs to be activated. If it continues to be activated, it will prompt that the SIM card is invalid;
2. Press home for models below Apple 8, press the power button for 1 to 2 seconds for models above iPhone x, and then select emergency call;
3. Enter *5005*7672* the latest iccid code in the dialing interface#
4. After dialing the code and iccid correctly, the phone will prompt "set successfully, the service center address has no address", then restart the phone, and then connect WiFi or iTunes to activate your phone; (Note: be sure to check that the code and iccid input are complete and correct)
5. After successful activation, the mobile phone will enter the desktop, pull out the black card, and insert your mobile zhenunicom SIM card.
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