Start by confirming both devices have stable network connections. Disable iMessage on the sender's iPhone to prevent routing issues: Open Settings, tap Messages, toggle off iMessage. If messages still fail, check Apple's deregistration tool by visiting their official site and entering your phone number.
Essential Troubleshooting Steps
Immediate actions for both sender/receiver:
- Reboot both Android and iPhone devices
- Disable Wi-Fi on both phones, use cellular data only
- Verify no active 加速器 connections on Android
- Ensure SMS/MMS are enabled in Android Messages settings
Advanced Carrier Configuration
On the Android device:
- Reset network settings: Settings > System > Reset options > Reset Wi-Fi, mobile & Bluetooth
- Manually configure APN: Carrier settings may need MMS port 80 or 8080 with correct MMSC URL
- Temporarily disable spam filters and third-party messaging apps
Persistent iMessage Resolution
If deregistration fails via Apple's tool:
- From iPhone: Delete existing threads with Android contact
- Send "REGISTER" via SMS to 48365 (U.S.)
- Request iPhone sender to initiate messages as SMS/MMS (long-press blue send button)
Test message delivery after each step. If unresolved, contact carriers to confirm MMS interoperability and check service outages. Provide IMEI to carrier to reset provisioning if needed.
