How to Fix iMessage and FaceTime Not Signing In on Hackintosh Without Wi-Fi

How to Fix iMessage and FaceTime Not Working on Hackintosh (USB Tethering)

iMessage and FaceTime require a valid network configuration and proper SMBIOS data. USB tethering alone does not prevent sign-in, but incorrect serial numbers or missing en0 configuration will.

Step-by-Step Fix:

1. Set en0 as built-in: Open Hackintool or System Preferences → Network. Your primary network adapter (USB tethering) must appear as en0. If it does not, delete /Library/Preferences/SystemConfiguration/NetworkInterfaces.plist and reboot.
2. Generate proper SMBIOS: Use GenSMBIOS to create a new serial number. Verify it on Apple's coverage site — it must show "not valid" (not "purchased").
3. Set ROM value: In your config.plist under PlatformInfo → Generic → ROM, use your real Ethernet MAC address (without colons).
4. Clear NVRAM: Reset NVRAM from the OpenCore boot picker before signing in.
5. Sign in: Open Messages, sign in with your Apple ID. If prompted for a verification code, enter it. FaceTime should activate shortly after.

Tip: For long-term reliability, consider a compatible USB Wi-Fi dongle or Bluetooth adapter to enable Continuity features.